It would be good to accept responsibility for the ticket. If you were speeding you got the officer's attention. He did his job writing that ticket.
As any police officer will tell you, once a vehicle has been stopped, it's time to run a check list. What else is out of order? (License, Registration, Inspection, Defective Equipment, DUI, visible evidence of a crime or illegal substance, warrant on the driver, stolen vehicle/tags?) When you get stopped, you're under arrest.

If you did what you got the ticket for, suck it up, get the expired paperwork updated, and do your pennance. Forget what color the cop was and forget whether or not you think he should have turned his back on anything he found.

If he did, he would not be doing his job. He could have dug a lot deeper like checking to see if your car would pass inspection and have it towed if he thought it wouldn't. If he went there, then I might agree with your assessment of his character.

Don't continue the character flaw so common today: to blame a personal failing on someone else, or to scream racism. There's enough whiners already. Count your blessings. I rode a bicycle until I was 21. I would have done just about anything to be driving a Crossfire at 17 (of course at that time it would have been something like a Series III E-Type...

Sorry to be so preachy. I'm really trying to help you see another side to this.