blah, blah, blah!
1. Conformity
Like with the Soloman Asch experiment. But for a whole group to ever get to a point where individuals feel forced to conform (or too lazy to just think) there has to be other things going on.
http://www.age-of-the-sage.org/psychology/social/asch_conformity.html
2. Indifference
People don't hate chickens, they're just utterly indifferent to them. A person can even be a sadist, a serial murderer; and ultimately the essential reason is because of their indifference to the suffering of others.
3. Misperceiving indifference in others
This is also often called hate. People usually bring it down to hate and indifference. But I'll get to that in a second.
There was an old twilight zone episode that demonstarted it sort ot:
http://youtube.com/watch?v=xIVIOPL1Vf4
If you just suspect that surely someone is actually "evil" (indifferent to the suffering they're causing) then that alone can ruin everything.
4. Force over Reason
When we perceive people as causing unnecessary harm and just not caring we think of them as being evil, and feel that it is useless to reason with them. When we think of them as "evil" we get angry, we feel hate and we turn to force.
We should try to stay with reason much more than we do instead of resorting to force, especially if we are actually misperceiving "evil" or indifference to suffering.
5. Too much faith/religion
I don't think having faith in a "god" has to be a bad thing. I don't think believing in a life after death has to be a bad thing at all. But people take it way too far and start having faith in all kinds of crap. They believe in heaven and wait for that instead of trying to make this world a good place. Most importantly they just in general get away from thinking and instead prefer to just believe whatever they happen to want to believe and this leads to believing all kinds of things which are harmful and also gets people away from even questioning if something they believe might be causing harm.
....
One can go inside the major reasons... So much can fit under conforming.....
6. The fear of being perceived as gay + hating gay people
Of course persecuting this minority sucks but it hurts the majority I think pretty majorly actually in that it keeps men cold. It keeps them afraid to express their emotions and have close relationships with other men, lest they be perceived as gay. It keeps people isolated ultimately. This is the result of conforming/religion and some indifference I suppose and if it's got conforming and religion it's using plenty of force over reason.
7. Monogamy/Jealousy?
Causes isolation. Less meaningful connections. Less love obviously.
8. Capitalism
Unregulated capitalism is insane. Communities have to care about the people in their communities. Otherwise they're not communities. People aren't allowed to go around beating the crap out of one another just because some people are stronger or because they may happen to get lucky in a fight. In the same way you can't have people getting economically destroyed just because they're not as smart or didn't get as lucky economically.
If people are free to beat the shit out of one another, it's not a community. And if people are living under the bridge, living without health care, etc it's not a community.