Jail is just another micro-society. It just happens that here, the problems are far more out in the open, we don't live with the facades of lies that democracy or capitalism creates for us.
If somebody is acting maladjusted - which means not happy to be at Rikers - the protocol, as I understand it and have been told by COs unofficially or officially, is to pepper spray that individual to sedate them.
I think the big turning moment was when I joined the student political action club and started studying nonviolent civil disobedience in response to the Iraq War. The first anti-Bush protest in Atlanta was the first protest that I'd ever been to, and I helped organize the school walkout when I was a junior. It was a really solidifying moment.