I'd heard the story (and its aftermath), though I hadn't yet heard much detail about it, and certainly hadn't seen any of the video. My first reaction is mystification at why these guys were being hassled in the first place, and I didn't see much to indicate "resistance" on the part of any of them. In fact, Grant is shown raising his hands in surrender before the police put him face down on the ground to cuff him. At no point is any active resistance obvious.
Then there's that unbelievably lame excuse that the officer might have mistaken his service revolver for a taser. What kind of dumbass like that could get hired as a police officer in the first place? I don't believe it for a heartbeat. Somebody is looking really hard for some kind of excuse to protect this guy and his companions.
From what I could make out, this incident is a far more egregious violation of common sense by police officers (especially the one) than the Rodney King incident, which was captured on a murkier video, and at least showed King not complying with police demands (probably because he was roaring drunk at the time). But nobody shot Rodney King.
caw