That there was abuse is not a matter of debate, it's documented fact. How and why the abuse came about, how widespread it was and who is responsible are all things up for debate. I don't blame the president for that, he wasn't directly involved, but that doesn't matter -- the point is his supporters did those things to help their party. The bottom line is government power misused to punish, harass or otherwise discourage political opposition. That should be a very scary prospect for anyone.
In interesting turn of events, normally it's the union thugs and other lefties threatening people who disagree with them. Either way, threats of violence are wrong no matter who does it.
Oh, kind of like when obummer says Trayvon could be his son? The president (and in this case, he's not even the president yet, he's not even officially the president elect as the electoral college has not voted yet) should understand that their words have consequences beyond those of other 'regular' people in society, but they can't be held responsible for the actions of people they don't control.