If you want to discuss the topic of abortion with me, I'm more than capable of holding my own in a rational, intelligent discussion, without losing my temper or being at a loss for words.
HOWEVER, if you even THINK about bringing my own child into the discussion, I will defriend and/or block you instantly. Period.
That is all.
(yes, I realize that this isn't exactly a problem here at dKos, but I posted this on Facebook as well as Twitter, so I figured I should include it here as well just for completeness).