Here's the tweet in question. 

Who hijacked term:"feminist"?A cackle of rads who want 2 crucify other women w/whom they disagree on a singular issue; it's ironic (& passé)

translation time

1. cackle: word you use when you probably mean "gaggle" as in a flock of geese or noisy group of people. "Cackle" sounds more harsh than gaggle. Harsh is good when hating oneself
2. rads: short for "radicals," these are people you don't agree with

As for who hijacked the term, clearly it was the Muslims behind the Cordoba House. Heart-stabbing muslims. Oh the irony.