Deviance

If deviance is behaving agains the common acceptance, then I would say that yes, it is sometimes acceptable to behave deviantly sometimes. Some people have a certain goal they are fighting for that they must be deviant in their ways to achieve. Martin Luther King, Jr. and Mahatma Gandhi are two well know examples. They both fought for things by going against the common ways and authority. I think much of this fighting against authority is taken as very skewed in modern days however. Many people like to just go against authority for attention and fun and don't really make anything better.