Actually, there have been quite a few studies on this and there are marginally fewer black drug users than white drug users, and roughly equal rates of drug dealing in the white and black populations

https://www.hamiltonproject.org/charts/rates_of_drug_use_and...

If I’m Muslim I should be OK with being profiled because some reprobates think it’s still the 7th century AD? It’s a little more complicated than “Was drugs your dealer?”