I'm not a democrat, hell, I'm not even american but how are the two things comparable?
One was deposed by the US after a full scale invasion and then an occupation that resulted in hundreds of thousands of deaths.
The other was deposed by his own people helped only by air strike support from the US who as far as I know never really invade or fought on the ground and with far less casualties for every side.
As far as I view it, it's not really inconsistent to support the latter while denounce the former.