A friend of mine is investigating this very topic in Washington, DC.
He was stopped in his neighborhood by a uniformed officer under, what he claims to be, questionable circumstances, and had his road racing bike confiscated w/o receipt. (He did get a ticket for riding w/o a light.)
My friend raised stink, got his bike back and the ticket quashed, and I assume some sort of comment on the officer's record.
Since then, he's been visited or pulled over by the same officer close to 10 times. (Getting kind of expensive, I think.)
My friend is speaking to a lawyer about a R.O., as well as trying to go the IA route. (Visits have been both in and out of uniform.) I doubt he will be successful with the R.O., but he is establishing history, incase something more serious than a traffic ticket comes up.
To keep it gun related, I helped said friend create a much better understanding of firearm ownership with his problems. In the initial encounter, his bike was taken because he could not produce a receipt or proof of ownership. Very similar to the AR owners in Maryland, who were asked to give up their rifles to prove they did not shoot all those people last Fall.
I still have not gotten him to come out shooting with me, but he does start arguing back when his other friends starts spouting gun control nonsense.
Marty
[Edited for spelling]