You're perfectly happy to equate people of all political backgrounds from socialist to libertarian, as they were at the G20, defending themselves from paramilitary police aggression to even the mere speculation that the current climate had some bearing on the tragic shooting in Arizona. That's the imbalance. That's the false equivalence.
There's no hair splitting going on here. There's meaningful speculation and there's outright deliberate obfuscation.
I want you to look at this screencap of Glenn Beck's site:
http://i.imgur.com/3hYtf.png
Look at it very carefully. Doesn't this stand as a perfect example of calling for violence out of one side of your mouth while pretending to abhor it with the other? This is the problem. You can't just discount the nut with a gun because it doesn't fit with your ideological views.