It's not about going around trying to stir up trouble. As long as you're honest and you articulate what you believe to be true, somebody somewhere will become your enemy whether you like it or not.
Do not think of knocking out another person's brains because he differs in opinion from you. It would be as rational to knock yourself on the head because you differ from yourself ten years ago.
...when two opposite points of view are expressed with equal intensity, the truth does not necessarily lie exactly halfway between them. It is possible for one side to be simply wrong.