They do it to blacks and whites just about as much as each other. You don't hear about the random people much, just the special cases that are suitable for the news. Don't mistake press coverage for the actual distribution.
Black people are killed at much higher rates (2-3x). Anything that says otherwise is usually trying to finagle the numbers by basically claiming that Black people have more encounters with the police so it's only natural. But that would imply that police have no say in who they stop and why.