From what I can tell, they fall into two roughly equal groups. The first group is as appalled about this situation as we here on FR are. Some of them are even calling for deportations!
The second group thinks that this whole thing is a set-up, that the Neo-Nazis in Europe are behind it to make the refugees look bad.
The first group is calling the second group naive. And the second group is calling the first group dupes of the Nazis.
After visiting places like DummyUnderground, it does appear many libs are disgusted by the events in Europe and want something done to the Muslims. They are foiled by their leftist brethren who either don't believe the reports (lies by the "right-wing" media) or have their heads buried in the sand not wanting to know what's going on.
Some of the semi-sane libs are demanding to know why Islam is not criticized like other religions. They hate all religions, so why is Islam give a pass they want to know. Good question libs....why do you all give Islam a pass?
We know the answer...Islam is the foe of Christianity and western civilization. So many leftists think they have an ally in violent Islam. They don't...Islamists hate all infidels, and would gladly slit the throats of leftists as eagerly as they would other infidels.