Contradictions, contradictions

This weekend, I had a very interesting conversation with a friend of mine. We argue about the many movements of people that have sauntered this world trying make a change in this world. We talked about the hippies, and their ideologies in trying to make this world a better world full of peace and harmony. Instead, the transmitted many diseases and caused their generation to be known for its laziness and degrading attitudes. Then he asked "what about the skinheads?" and we argued about their powerful ideologies of creating anarchism and equality among all races, and how poorly their were to transmit these ideologies to the resting society. Instead of creating equality, they created hostility. Acting with violence. Contradicting their beliefs and secluding all kinds of people. Feeling hate towards the hippies and trying to end with the neo-Nazis, also known as boneheads (Skinheads are commonly seen as Nazis because the boneheads or neo Nazis dressed similar, even though they fight for different ideas, the skin head fights for equality and the bone head fights for his/her race they see as pure, they are mostly white-skin people.) Then we talked about the punks, and we came to the conclusion that they were also a group of contradicting people fighting for equality. After talking mainly about these three types of groups, we came to realize that it is impossible to impede conflictions between humans. We all fight for different reasons, and because we may share ideas with others, we might as well oppose with each other's opinions. With all this said, I would like to receive every one's opinion of integrity, and if those possibilities of creating a homogeneous society may exist, or may them be impossible to apply on reality. Also, I may want to know what type of government can cover all these difference at once. Your sincere opinion please.