Dream of animals, person

I came to a place that looked as though it was a small or medium size town with a dome over it. there were animals in side already. many other people had come to this town also but apparently we were all lied to of what this place really was. it was actually a huge experiments they were doing on us. they close down the dome and all exit to get out of the town. it was all in order to see what to people would do when they are trap or in time of a disaster. when we were locked in everyone went crazy and started to kill one another. in the end pretty much everyone had kill at least one person and have gone crazy or semi crazy but me. the people who were left made a vote for a leader and then we moved forward to a year or maybe more later. we have develop our own society. no one kill each other anymore but it was still allow