Are you referring the fact of Freedom, Justice and Equality, or the statement about it takes two to tango? Neither of those two statements endorses violence nor non-violence, they are statements in fact. A person must be willing to accept the consequences of their actions, be they an average person (I hate that phrase), police or anyone, we are all responsible for our actions and should be mature enough to face whatever consequence that comes as a response. In any given situation that involves violence, be the violence physical or verbal, there is always two or more people involved in the altercation; it takes two to tango. A person normally does not fight with himself or herself.