Why do blacks get angry when white people wear hats in Scream 3?

You're not talking about Scream 3, but the movie series Scream 3, which spoofs horror movies. I remember that the man in the movie wore a white hooded sweater, because it looked like a Klan costume, so those people were very angry. At that time, his friends also told him to take off his hat quickly. The Klan is an white supremacy organization in the United States, and its members are extremely racist.

I cut a picture for comparison.