I think that there is racism when black m en are seen as more dangerous than white men.  
No, all American whites are not racist, but many are.  Many who are not overtly racist apparently think that racism is not unacceptable, because they do not speak up when racist comments are made.  I have read the BLM website and don't see anything that would suggest that the group believes that American whites are generally racist.  
You say that "[n]o state, county, or city government in this union sponsors racism."  I am not quite sure what this means.  Although no law supports racism outright, the manner in which many laws are implemented has a racist result.