Not many outside of Canada have apparently heard of wendigos. They are evil cannibalistic spirits which can possess a person and drive them to eat human flesh. He was reported by witnesses to have been eating a piece of flesh at one point. Maybe it wasn't a spirit but the similarities are eerie.

Alex Martin, Talent, OR, USA

Looking forward to the article covering when Stan from Cody WY accidentally shoots his neighbor...

jason, Chicago, USA

it just takes one maniac like this to ruin it for everyone else.
i take the greyhound when i travel and its great, its a shame we have so many nut cases out there that we have to be scared of

dean, minneapolis, usa

so what is going to be done now by greyhound to prevent this from happening again? There should be metal detectors at the door before passengers are allowed to enter the bus. and grey hound now needs to consider having armed security guards on their buses.

Toya, Baltimore, Md

Funny. This kind of crime doesn't happen in Wyoming. Oh, I forgot. WE'RE ALL ARMED!

Stan, Cody, Wyoming, USA

If the bus driver had been able to carry a gun all of this mayhem could have been prevented. As to giving law abiding citizens with no record of mental issues the ability to carry arms, what other problems would be caused other than the ability to protect your self against mad men like Li?

Sherry, Los Angeles, US

To all you NRA card carrying good ole boys commenters, if you'd gone charging in like Rambo with your gun or bowie knife there would have been two dead people instead of one. Most likely more. The guy was almost certainly dead by the time people noticed and lynch mob justice wouldn't have helped.

Catherine, London,

@Rachel, pluralistic ignorance only applies when there is uncertainty in the bystander, in this instance i think it would be nieve to think that the passengers' were unaware of the horrific crime. Fear seems more appropriate.

Daniel, Woodstock, England

Some may not agree, but could we be looking at a form of demon possession here? The question for everyone to try considering other then the guy is psychotic, is...what else could drive a person to randomly commit a murder so horrifying and grusume? We're dealing with something extremly deep here..

Lamar , Cincinnati, USA

I agree w/ Kathy. It's too bad that no one else was armed. A properly-handled firearm would certainly have been useful , and might have saved the victim's life. Had the attacker posessed a gun, how much more so!

Rachel, Norman, USA

Complex piece of analysis. Behavior, a cross sectional function of cultural and environmental determinants, how do you push that button and, poof, presto-chango, with statistical certainty a perfectly normal guy goes berserk? No one's been doing this kind of stuff since the Project MK , circa 1960s.

Alfred Samuel Joseph, Los Angeles, California

I am disgusted by the number of people who claim that violence such as this warrants bearing arms. That only creates a larger problem.

Kelly, Washington, DC, USA

So Charles - you are telling me that you would confront a psychotic guy with a large knife and scissors who had just attacked & killed someone in full view of others, in a confined space - apparently McLean was clearly dead pretty quickly - what would be the value of sacrificing more lives?

Gem, Notts,

In reply to Charles P Queen, Somerset, USA

...Err...he had a knife...!

I agree about the word "accused". It would certainly seem as if there were plenty of witnesses!

A J., Edinburgh, Scotland, UK

I've read about this on other news sites and a lot of people kept asking, "Why didn't other passengers jump him or stop him?"

1st think of this, what type of weapon was the guy holding? 2nd, is he crazily hacking away at the victim? Third, would you seriously be that alert or shocked and scared?

Li, Richmond, Canada

One of the worst things i have ever heard. I just cant belive i haven't heard any mention of this story of the main news. Horrific. i feel for the poor victims family and the witnesses.

Becky, Hants, UK

The solution is NOT to have everyone walking around with guns as many of the cowboys from the USA suggest. If Mr. Li had had a gun he could have killed everyone on the bus and if theother passengers had had guns who knows how many would become "collateral damage" in the crossfire.

Neil, Amsterdam, Netherlands

This is surely worse than any horror film.... Utterly gruesome and pure lunacy. Surely there can be no rational analysis around what possessed this man to do this (apart from the devil!)

Lara, London, UK

Cahrles, the narrow aisles would mean one person at a time taking him on. It wouldn't be a mob versus one.

We don't have the death penalty here in Canada, so he won't get his wish. He's so sick the feeling here is he'll be spending many years in a mental institution.

Keith S, Winnipeg, Canada

When someone is in a psychotic state, as this individual certainly was, they possess extraordinary strength which would have defeated even half a dozen men. Had anyone tried to 'jump' him they almost certainly would have ended up either dead or badly injured-I too would have left as fast as I could.

wendy, belfast, northern ireland

The man is guilty that much is evident - bring back capital punishment, get him off the planet and not a burden to the tax payer anymore. There is no excuse for the act he committed. Was he vetted sufficiently when he migrated from China to Canada? What is going on, in the last week 3 decapitations?

Paula, paris, franc

Reports here from church people who knew him, who tried to help him, are he'd been troubled since he arrived here 4 years ago. He is married, quiet, held down jobs, would take off on strange trips, made up weird explanations.

We wonder what happened to him in his life before here.

Keith S, Winnipeg, Canada

All themore reason for the right to bear arms.

alex paterson, parma, USA

Canada has a law about not being able to carry guns or knives for 'self defense'

Margaret Edwards, Philadelphia, USA

Why didn,t the other peoples on that bus try to stop the guy.How come 37 peoples couldn,t stop one guy who was having just one hunting knife

nasim, toronto, canada

I most certainly would have tried to stop Mr. Li. I'm not a coward, and I never go anywhere without a defensive weapon.

PT Gustan, Elkhorn, Nebraska, USA

It's a long way between stops on some of these Greyhounds.

Kevin Straw, Leicester,

Not what you want to hear but i think the guy was possessed. sounds like txt book Possession if you ask me

Andrew, Portland,

To Sascha

It doesn't say he didn't have a hunting knife. Every report I've read says he did. When this reports says he had scissors, that DOESN'T mean that he didn't also have a knife. Not fishy, just brutal and very, very sad.

David, Exeter, UK

Testimony to the bravery of the passengers.

Ron, Adelaide, Australia

It is a common behaviour pattern in bystander intervention (or lack of it) known as pluralisitc ignorance, where the larger the number of bystanders in a an emergency situation the less likely any action to be taken.
Not surprising in such a bizarre and terrifying situation.

Rachel, Wilmslow, England

Too bad nobody on the bus was armed with a gun but then carrying concealed guns is barbaric isn't it?

Kathy, Elburn, USA

He is obviously insane and heavily depressed and needs to be contained in a mental institution for a long long time.

And to the people who indignantly exclaim why no one helped him, if I were on that bus instinct would dictate me to run for my life, and sorry if that makes me a selfish coward.

Liz, London,

He didn't have a hunting knife - it clearly says "scissors".

I wonder how on earth you sever a spinal cord and bones with a pair of scissors. Sounds fishy to me.

Sascha, London,

I don't think there is any way any of the passengers could have been expected to intervene in this situation. You're in a highly claustrophobic environment, you can probably smell the victim's blood in the air, and there is a lunatic with a massive knife near you. Really, you would approach him?

EB, Shropshire,

Charles Queen : why didn't anyone stop the guy? Well -- the sight of a burly middle aged guy roaming a narrow bus aisle with a bloodied hunting knife, blank eyed and robotic according to all accounts, might tell you precisely why.

Joe, Oxford, Uk

If a man is viciously stabbing someone, i doubt you would go up to him either! Plus you mostly likely have children, you put them first, they need you. The victim is already dead, why risk being killed and living a child without a parent. The best think to do is get others of the bus asap.

Daniel, birmingham,

It's easy to say why didn't peolple help? But I'm pretty certain to be actually on the bus while a man plunges a knife in and out of another man then starts to cut his head off, the self preservation instinct would kick in ahead of the thoughts of heroism in the vast majority of people

Darren, melbourne, australia

None of the passengers would try to stop him. He's armed and obviously not the least hesitant to stab anyone else that tries to stop him. Even if everyone could've taken him on, it would risk the safety of another person. Most likely by the time anyone realized what was going on, that guy was dead.

Margret, Irvine, U.S.A

To Shawn,

He is accused, because, no matter how much evidence there is, a person is innocent before proven guilty in a court of law under Canadian law. Whether this is the case in the USA now is debatable.

Charlie, Munich,

The other passengers did try to help the victim. Once the alarm was raised and the passengers had been evacuated, a small group went back to help. After the accused charged at them with the hunting knife, they retreated, barred the doors, disabled the bus and kept him there til the police arrived.

Amy, Edinburgh, United Kingdom

Why didn't other passengers help the victim? Would you try and stop a guy while he is removing someone's head? I think not! Think about it people.

David, Winnipeg, Canada

After spending a good few hours one morning viewing gruesome videos online I have come to a very grave conclusion; rarely will the public intervene in the event of a crime such as this. Even the victims cries for help will often be ignored. How many lives have been lost needlessly due to inaction??

Max, London, UK

I have been asking myself the same question "why didn't anyone help the poor guy who was being murdered in front of their eyes,,and why didn't the cops blow him away when he started eating pieces of the victim, now the taxpayer has to feed and house him for the rest of his life in a nice comfy cell.

Aaron Coveney, Rotorua, New Zealand

The most grotesque crime I have ever heard of. Why didn't the passengers help the victim,,and jump the sicko.?

monty, Richmond ,

I have to ask,why didn't the others on the bus try to stop this guy.Surely out of all of them there should have been enough to easily subdue one person.That part dosn't add up to me

Cahrles P. Queen, Somerset, U.S.A.

As Springy would say "Wow, what a weird story"

David Humphries, Sydney,

"Accused"? How many witnesses and confessions do you need before you can drop the "accused" from the headline? Or do we need to pump his stomach for evidence first?

Shawn, Louisville, KY, USA