So, let's say that Bob, a liberal, disagrees with thing X that Obama has said or done.

[Commie Pinko Dirtbag]

And Bob expresses such disagreement in no unclear terms. Bob is not being offensive, or advocating not voting for Obama, or anything of the sort. In Bob's rant, he links to plain news sites such as CNN or MSNBC. And maybe some respectable blog like Daily Kos or Pharyngula or Krugman.

But, look, the bête noire FireDogLake is ranting against Obama about the exact same subject, loudly, and is being pelted with cries of "firebagger" and other insults. Along with anyone who cites from there.

Is Bob a "firebagger?"