Intervene a cop doing his duty? You're lucky you didn't wind up with a bullet in your ass. First of all you are required to carry and show ID when asked by an officer. So he was walking a dog, let me guess a toy poodle, and an officer asks him for ID and he says he doesn't have any, red flag no matter what color you are. If there was a nationwide epidemic of black youths in white neighborhoods randomly planting impatience, begonias and tulips I guess there wouldn't be a problem, however, reality being what it is you make your own world. Unfortunately, the people Colin Kapersnake should be mad at is the black youths who do assassinate cops :
https://www.youtube.com/watch?v=mdRrG7qz5CQ
https://www.youtube.com/watch?v=Ku7PpEc64xI (This one they have the shooter on DHS cameras at the Atlantic Avenue Train Station walking past two black officers and exiting the station to assassinate two white officers. These shootings came after a BLM rally where the crowd was chanting "What do we want, dead cops, when do we want them, now)
https://www.youtube.com/watch?v=hqQXmnMr_w8
That's who Colin Kapersnake should be protesting against since he is picking on a minority of officers he overlooks the not so minority of black youths who are inculcated from youths to hate cops and be defiant against them. These are the people who make it bad for the rest of them, put cops on edge. And because you have a personal experience doesn't mean you can broad brush all LEO, so what your neighbor's kid learned to always carry ID, big deal, it'll save him a hassle next time.
As far as that story about the cop I'm pretty sure it wasn't trash, I worked in Harlem for 10 years and if I remember that particular story it was a compound bucket aimed and dropped on the head of a police officer. I worked for the phone company there and when we were working we would constantly have to look up because the little bastards would drop bricks, bottles or anything they got their hands on and laugh doing it so tell me about the plight of these poor kids who have nothing better to do than to injure and maybe kill people for fun. Just around the same time in Washington Heights they were throwing Molotov Cocktails at Fire Engines responding to fires.
Guaranteed you voted for Hillary