Hate Groups in the U.S.A.. - Who Are These "Groups" and How Many Are There?

Some one reported a figure of over 900 hate groups in this country. I suppose that include hate groups like "Black Lives Matter', all the gangs hating and killing each other,(reports indicate their are over 250 gangs in this country, Mexican, Blacks, Whites, Chinese, etc.), hard Left-wing media groups that hate Trump and dozens, maybe hundreds more out there that are hating and killing innocent people. My Thesaurus describes groups as #1- A number of persons or things located close together, or considered or CLASSED together. That being said, their are probably a few thousand hate groups in this country. Interesting but sad.