The problem with skaters like this is they have no respect for anyone, even themselves. If you look back at the start of skating, and then when it really got popular in the late 80's you almost never saw this type of stuff.
Look back at any of the old videos from Powell or Santa cruz, you see the "skateboarding isn't a crime" stickers and the occasional jab and laugh at cops, but you never saw anything like this. At least back then kids still had some respect, or at least knew their parents would kill them if they acted this way.
I was big into skating, had a half pipe in my back yard, ran from the cops at Wallows if they showed up (in Hawaii), broke out a few store windows by accident when I wiped out, grinded down many a curb, bench, wall,,, but I never acted like that.
Now I'm on the other side and work as a Deputy. I think the officer went over board at first, but once he arrested that first kid, the others should have just did what he asked and left. Or at least stayed back to let him do his investigation.
Heres what I do: I ask the kids if they can name 4 former Powell Peralta skaters (not Tony), or if they know who Animal Chin is,,, if they answer correctly I let them skate, if they don't I kick them out and send them on a quest to find the answer.
L8tr Sk8r