Society yes, but not human nature. The vast majority of people abhor non-defensive violence. The government gets away with mass murder and destruction because people have been indoctrinated into believing a false dichotomy. They only accept the horrors of the government because they falsely believe that the only alternative is a larger degree of chaos and disorder.
You need to learn more about human nature.
1. People act irrationally and emotionally
Take the wars in Iraq and Afganistan, the single biggest issue of the past decade for example. People were enraged. The vast majority of Americans were in favor of blowing the shit out of Afganistan. Who cared whether or not Al'Queda was actually there. Who cared whether or not there were civilian casualties. WE WANTED REVENGE, and Afganistan was associated with Bin Laden, at least in our minds where it mattered. Iraq was the exact same way. What do you think the relatives of the innocent civilians thought bout this? I'll bet they were angry.
An important point to realize about this is that most Americans supported the Afgan war, it was POPULAR.
The point is that people often lash out when they feel as though they've been wronged, and they lash out, often toward innocents who lash out in return.
2. people often don't want to put themselves in danger to help another person.
You've probably heard stories about how one person will be wronging another in the streets, and most people will just ignore him. Sometimes someone else will help, but that is the exception rather than the rule. Sometimes, someone who thinks that they are helping will just make the situation worse. Sometimes the apparent 'victim' really isn't in as much distress, or sometimes the attacker and his accomplishes will take retribution on the victim, and likely the helper too. see section 1.
3. People's interests don't always line up
Sometimes one person will believe that he's been wronged by another, when the other person will believe that he did nothing immoral. Situations like these are why we have written LAWS.
4. it only takes 1 person to create a state of lawlessness
I'm sure you might have seen the following pattern before.
Lets say there's a social norm, and person A violates that social norm to get ahead. Other people won't think it's fair that person A was able to get ahead that way, and they weren't, so often other people will violate the same rule that person A violated because "if he can do it, than I ought to be able to do it."