I'm white. I got a bogus speeding ticket 2 1/2 years ago from the chief of police in a small town in Kansas who was said to write tickets on non-residents to raise money. My ticket had been started before I ever got to town and the location and the speed limit were crudely changed on the ticket to make it appear genuine. The City Attorney who prosecuted it blocked my attempts to get a dash cam video and audio dispatch recording that would have proved the chief tampered with the evidence, writing the ticket to cover his failure to follow through with finishing for the person for whom he had been citing. I finally pleaded guilty to what I thought was a non-moving violation, rather than drive hundreds of miles again for a preliminary hearing and then a trial. However the prosecutor had lied to me. I actually got a moving violation.  I was appalled, but I must say that most of the police I've worked with over the years have been honest.  but am well aware judicial discrimination exists.