I think things people say also falls under behavior.
For instance, as one poster said to me: "the real problem with Detroit is all the black people."
Now, since I'm from Detroit, this injures me on two fronts. And while it's 'sticks and stones', the effect is often a challenge for me.
When you hear someone belittle you, your family, and your friends like that, you get flooded with a million things to say back. Anger, justifications, pent up frustrations, anger, explanations, accusations of hypocracy, anger. You just want to explide with anger, and explain precisely why that hurts. And the thing is you can't say any of it. I can't. I just have to respond calmly and compassionately. And that's really hard to do.
And here's the real problem. Because I swallow all of that, it makes it that much harder to not have racist thoughts about the next white person I encounter. It's hard not to continue the cycle, and let it spiral out of control.
In short, yes.