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.
Theology is a study of the series of disagreements that are the world's religions. Atheism fundamentally disagrees with these disagreements that preceded it.
In some ways, we will always be different. In other ways, we will always be the same. There is always room to disagree and blame, just as there is always room to take a new perspective and empathize. Understanding is a choice.