This situation actually has far broader implications about all citizens' relationship to the police and the way we are expected to respond to authority, regardless of race. I've watched too many taser videos over the past few years featuring people of all races and both genders being put to the ground screaming in pain, not because they were dangerous or threatening and not because they were so out of control there was no other way to deal with them, but because they were arguing with police and the officer perceived a lack of respect for the badge.
I have discovered that my hackles automatically going up at such authoritarian behavior is not necessarily the common reaction among my fellow Americans, not even my fellow liberals. The arguments are usually something along the lines of "that guy was an idiot to argue with the cops, he should know better," which is very similar to what many are saying about Gates. He has even been criticized for being a "bad role model," thus putting young black kids at risk if they do the same things.
H/T Glenn Greenwald (whom I admire) for the link.