Who are these people?

I've encountered a group on Facebook going by the title "BernEffect".
One would assume that they"re Bernie supporters, but their posts are odd, aggressively promoting Randian ideas, and viciously attacking anyone who questions their libertarian slant. They seem to dabble in the occasional conspiracy, too, and regularly bash Democrats.
Bernie doesn't really get mentioned very much, and most of their stances are the opposite of his.
Facebook sees nothing peculiar about a supposedly liberal group that is attacking Democrats.
Who are they?