Here is one about how black people make up 13% of the drug user population but make up for more than 63% of arrests for drug possession. Some of the stats on this report are from the 90s but they have not changed. Today it is this "African Americans represent 12.5% of illicit drug users, but 29% of those arrested for drug offenses and 33% of those incarcerated in state facilities for drug offenses."
https://www.bjs.gov/content/pub/pdf/rdusda.pdf
Here is one that shows black peole are given much longer sentences than white people for the same crimes.
https://www.aclu.org/sites/default/...achr_racial_disparities_aclu_submission_0.pdf
Here is some that show the racial profiling that has happened in media with drug epidemics.
https://www.cjr.org/criticism/opioid-crisis-photos.php?link
Here is one that shows police stop black people at a higher rate than white people for traffic tickets and ticket them more often and search them more often.
https://openpolicing.stanford.edu/findings/
Here is one about police speaking more politely to white people than black people even when you control for contextual factors.
http://www.pnas.org/content/114/25/6521.abstract
Here is one of many talking about a few of the issues with crack vs cocaine laws and discrimination that targets black people unfairly.
https://www.usnews.com/news/articles/2010/08/03/data-show-racial-disparity-in-crack-sentencing
There are tons more of this nature. I tried to post an array of topics.
Personally if people dont think that racism exists in the US society I think they are turning a blind eye to it. It is very prevalent in our society.
Plus again even if for some reason there was some thing in the genetic makeup of a black person (which there is not) that made them more likely to commit a crime it is still racist to profile and target them by definition. The fact is most (not all) stereotypes because a lot of people from a group fit into them it becomes racists to assume everyone fits into those stereotypes.