I Need a New Job

My manager is the owner of the business where I work. Sometimes he is stressed out and is very rude to the employees. Today he was very rude to me several times and I was visibly upset about it my whole shift. I wanted to just cuss him out and quit but being as I am the only black girl who works at my job I didn’t want to be the typical angry black girl. How Can I tell him that I won’t tolerate him speaking negatively to me without coming off confrontational?