Often the studies showing this are flawed, or at least incomplete.

For instance, it is often said that black people being arrested at higher rates for buying drugs in small amounts compared to white people when data shows that both groups use drugs at the same rates is evidence of discrimination.

However subsequent research has shown that black individuals often engage in much riskier behavior when buying drugs, leading them to get caught more.

What evidence do you have that "police, prosecutors and juries will go after black people more harshly and more often"?