Do any of these involve anyone other than just you? You know, that offer a comparison and are relevant to the discussion?
Edit: Just to be clear, I do not appreciate the antagonistic tone in your comment.
(I'm not -- at least, not exclusively, or in general perception -- white, have lived in parts of CA with lots of diversity, and have often failed to follow the "rules" without problem -- and don't think any of that is unexpected even with the "rules" being valid.)
Even then you would need to have a cop-experience involving other races, in areas of "little racial diversity" to make this conclusion -i.e. Your black friend and you (white) were treated no differently than the other times you were pulled over alone.
Your stories really only involve you, which is weird that you think they're relevant.
I’m white, and live in CO. I was traveling the day before Thanksgiving and traveled through South Fork, CO (which is at the bottom of a mtn. pass). I was just following the car in front of me (at a 200m distance), doing ~40mph. Apparently, the speed limit drops to 35mph for a short stretch in the ‘business district.' I saw him in my rear-view, pulled over, and he pulled-up beside me. He rolled down his window and told me to follow him because he had someone else to ticket (I was clocked at 43mph he said). He gave us both tickets that were $100/ no points if paid quickly, it’s a total racket.
Also, I’ve been pulled over ~15 times in the last 20 years (mostly in Boulder), and I’ve never left my hands on the wheel. I immediately go to my glove box and get my registration/insurance, then grab my license. By the time the cop gets to my window, I just hand over all 3 documents at once.
One time, I was doing 90mph through Denver at 4am for a Crispy Creme run as the designated driver. On I-25, I think the speed limit there was 55-60mph. He gave me a warning.