You have described a problem that now seems to be confused with "racism". That is, ordinary society used to be polite here in the US. If a community insists on "politeness", it appears that this is seen by blacks as demanding subservience to "the man" and despised. How can we change this so that decent manners come back into vogue?
I have nothing against blacks, but I do have a great deal against much of the culture they espouse (rudeness, anger, sloppy dress, sloppy speech, cruelty to women, cocky attitudes, lack of orderliness in their homes, vile language, use of drugs, immoral behavior, not marrying the woman before they have sex, gang membership to be tough, not valuing any reasonable education, etc.). It has nothing to do with their color. For that matter, I have a great deal against much of the same culture young white kids espouse. Thoughts?
The difference is, that white kids grow up and leave the sloppiness behind and start wearing suits and start working regular jobs and having families. Black kids grow INTO that culture and end up wrecking their lives. They don’t shed it and become part of normalcy, laughing about their youthful idiocy. They sink to the sidelines, BY CHOICE no less.