I mean, as crazed and fevered as Conservative hatred for Obama is, I don't see them regularly calling for him to be dragged to international court and executed.
That mostly has to do with Obama detractors usually not even being far enough educated to think of anything like that. That and those that are look to Hillary for Benghazi.
Anyway, regressive (since Obama is conservative) politicians quite obviously hate Obama more given how they've obstructed away any meaningful fixes from the Bush years and even now are denying an SC nomination out of spite.
However liberal activists hate Bush more, between the pointless war, sketchy election victory, Dick Cheney, and climate change denial, well it's quite easy to see why.