okay here are my reactions
1) The biker was being a complete dumbshit. Don't excessively speed and you won't get cops chasing your dumbshit ass at 100+mph.
2) The cop car in video=moron. Yelling 'yeehaw' was pretty fckin stupid, but consider his adrenaline pumping. He didn't drive poorly, just the choice to chase the motorcycle he couldn't even see was poor IMO.
3) pushing the bike over=dumb, obviously. But, we're talking an adrenaline-caused reaction as well.

Still, his bike was prolly impounded.