"Why don’t you laugh and talk like the other n*****s?" he asked.
"Well, sir, there’s nothing much to say or smile about," I said, smiling.
His face was hard, baffled; I knew that I had not convinced him. He whirled from me and went to the front of the store; he came back a moment later, his face red. He tossed a few green bills at me.
"I don’t like your looks, n*****. Now, get!" he snapped. (1.9.51)
We guess it’s easier to believe a stereotype if you make sure that everyone around you plays into it. It’s harder to believe that black people are happy being oppressed if that one guy is always moping around. It’s also easier to believe a stereotype than to, you know, try to improve yourself.