Well first of all, I am Aussie, so I dont really know how things are in the United States with African Americans and whites and stuff.. but I´ll give this a go..
If I didnt know any better, as a non-North American, my perception of African American women would be exactly the one that you say- loud, crude, and ghetto. Unfortunately, people get off on making and watching stupid shows like "I Love New York", "Flavor of Love" and all those talk shows where the majority are loud, poorly spoken, slutty African American women. Im not saying that White North American women arent slutty, loud, etc as well.. but its just what gets put out there. Its a kind of stereotype that people love to put in TV shows, and people eat it up. I know that there are well-spoken, classy, intelligent black women out there... but I guess they just dont make good TV.
All in all, I think this is kind of damaging to African American women in relationships, employment, etc. It affects people´s perceptions of them and creates a stereotype, and white women are probably just seen as being "less dramatic" and "less maintenance".
So maybe instead of hating white women, you could turn to hating people that bastardise African-American women for entertainment purposes and to make money from it, because it definitely has its effects in society... Im not even North American, but I think the way African American women are portrayed is disgusting and a gross misrepresentation of what theyre really like. Get in on that cause and use your energy in a good way, instead of blindly hating other races.