this is pretty horrifying i mean could you imagine being there. also if this dude had a knife why didnt anyone try to stop him?? a bus full of people and a dude has ONE KNIFE and they just calmly walk off the bus? i mean the kid was probably a goner but how can you resist the opportunity for some vigilante justice?
This + all the other posts like it + MOG: our minds have psychological blocks in these kind of situations. It's called Bystander Apathy, medically. You can read it here:
http://www.spring.org.uk/2007/10/why-we-dont-help-others-bystander.php.
Basically, your mind is programmed (so to speak) in such a way that the
more people that are around in a bad situation, you won't want to do anything and just watch because your mind assumes (given a quick scan of the situation) that other people are going to do it and it isn't worth the risk.
Except, everyone else is thinking the same thing, which initiates the flight response from everyone since everyone assumes everyone else is going to do something. Breaking Bystander Apathy requires you to either have a screwed up mind, or to be trained against it. You basically have to be mentally trained to help out in situations like that, cause the average person (read: that's a fucking lot of people) who are psychologically normal are going to run in that situation. Generally, people who have been in the army, boxing, etc get the training to go against this because in these fields they are trained to generally prevent the flight response (unless ordered to retreat). Boxer's for example get hit all the time, and to the average person you try to defend yourself (if you can) then run away, but boxer's are trained to break the flight response and keep fighting until the fight ends. That helps them "break" bystander apathy.
You can say "busload of people" all you fucking want, but unless if every single person on that bus was psychologically not normal or psychologically trained to break bystander apathy, they aren't gonna do anything, and neither are you.
The freaking Bystander apathy is also called the Genovese syndrome, after Kitty Genovese who got stabbed and raped and 38 people were around and no one did anything! It was exaggerated (about only 1/3rd of the people saw something in actuality according to witness reports) but still! You can keep talking about how its a group of people but Social Loafing (people less likely to do goals when more people are around) and Responsibility Diffusion (placing less responsibility on yourself when more people are around) are both proven psychological effects. Since everyone isn't doing anything, everyone assumes help isn't needed, and that just causes Social Proof (causing the nature of the situation to be determined by the majority because you assume other people have more knowledge. IE: NO HELP NEEDED NO ONE IS HELPING) and pluralistic ignorance (people who have a different opinion, follow other people's opinions because they assume they are unanimously right. I'm sure someone on that bus had a different idea that help was needed, but didn't follow out because of this psychological effect) to happen.
Now marcus would have done something I'm sure, but simply because he is in the Navy and even people in the Navy are trained to basically break the flight response. MOG/gr/whoever, unless if you are psychologically NOT RIGHT or trained to specifically break this response, you wouldn't have done shit. I wouldn't have done shit. The only way you can get around the bystander effect is if you target a specific person in the audience (since you're placing responsibility on one person, instead of giving it to everyone), and considering this guy was getting stabbed I don't think he could really go "YOU. *POINTS TO GUY* CALL POLICE NOW." in his mind. He probably yelled HELP, which just triggers the effect.
EDIT:
Also to the people who are all "i'm 19" or w/e, living life in fear of unpredictable stuff like this is a bad way to live. It's just an uncontrollable unpredictable event! You're probably more likely to hit the lottery than getting decapitated on the bus any time soon.