Back in either October or November I asked a slacktivist if they were using "die cis scum" ironically. They told me they were dreaming of the day the government enacted the purge, just like in the movie, so they could "even the score*." I was going to ask them if they would kill cis identifying children but, given the general whackadoo they were spouting, I decided against it. I was pretty sure I couldn't handle the answer.
So, yeah, I'm pretty sure some of the nutters mixed in amongst the group are serious.
*Talk about an extreme case of comedically missing the point.