This shouldn't be much of a surprise. I don't use facebook, but I did try it out a few years ago just to interact with some folks regarding a protest at Virginia Tech. They were organizing an "anti-gun violence" protest, (as if this isn't the most foolish and transparent straw man protest ever. They like to pretend that there is a group somewhere who opposes them on the grounds of being pro-gun violence. Nonsense.) As I know their real agenda is actually anti-gun, I offered the suggestion that they should change it to an anti-violence protest. I made a compelling argument that picking a single tool of violence was inadvertently offering support to those that committing violent acts with other weapons. Why would you support knife violence?
I'm pretty sure this was a group of well intentioned students (ignorant of the facts, other than the lies presented by the brady bunch) who might have actually given this some thought, until the anti-self-defense loonies got word of it. I was banned.
I think one of their members is now on the board of some other brady bunch front group bilking ignorant fools out of their money. They were adsorbed into the collective. Resistance was futile. I believe "useful idiots" is the title those people get.
I've even had civil, thought provoking, pro-gun comments removed from online "news" sites where they require you to login with a facebook ID. I've learned recently that there isn't really any reason to bother with news comments, or facebook arguments. No one changes sides in heated debates. I suspect the comments on quoted on that blog site are from Agent Provocateurs within the brady camp who pose as pro-gun extremists, just to discredit the mainstream of American gun owners.