Both Kathy and Anita happen to be women. Seven years ago Kathy was driven out of the public sphere by credible violent and sexual threats by the male misogynist low-life miscreants who troll the internet. Now the same is happening to Anita. Don't let the seven years between these events fool you; this kind of thing is happening over and over to other women (and their occasional male defenders) on the same or smaller scales.
It is a rude reminder that the civilized among us live in a world that is surrounded by the far-less civilized. Whether it is Islamic fundamentalists raging through the Middle East cutting of heads, bands of robbers raping their way through Africa, gangs in Italy or California, drug peddlers in Mexico or Columbia, or the racist, sexist, anti-semitic trollers hiding in anonymity in middle America, these are people who are certain that they are better than you and that you have no right to be free from whatever violent actions, threats, and sexual or physical abuse that they choose to direct your way.
The rest of us must remember that, regardless of how liberal or tolerant we are, there are people who are not who will truly not "live and let live". They must be vigilantly and repeatedly condemned at the least, and legally and physically fought when necessary.
Anita's videos are fantastic, of course. Regardless of whether you agree with every point or every example, her contributions to the understanding of tropes in the media is excellent and she should be applauded or intellectually engaged with, not threatened, nor should she or her family be physically or sexually threatened. Like every truth-speaker, the fact that her analysis reveals a systemic problem with the status quo, and results in a violent reaction of those who want it to stay that way and who pour their filth and hate onto others, is proof that she and others like her are nailing it and must ever-vigilantly continue to do so.