It's not like he said "owww the handcuffs are too tight," he said he couldn't breathe multiple times. Seriously, he was surrounded by cops and he wasn't gonna get anywhere if he tried. The chokehold was entirely unnecessary. How dumb do they feel that they didn't honor his simple request, which then caused him to die? Dunno, doesn't matter, they got off for free.
And not, I don't really bash cops, as I kinda try to stay out of these kinds of debates. However, this shit is inexcusable.