It doesn't matter what you think they deserve. You're not a god and you have no business setting people up for suicide or murder or other terrible shit.
Also keep in mind that this is how one creates a martyrdom. The more restrictions and attempts you make to purge a group of people, the harder they fight back, and the more you validate their world view. This is why nobody advocates purging crazy idiots like Flat Earthers or Creationists: Martyring them just makes them stronger in the end. The only way to truly kill an idea is to leave it to flounder in the marketplace of ideas, untended, ignored, and mocked at every opportunity. Not by specifically drawing attention to it.
This kind of public shaming only brings attention to the KKK, and folks in Hollywood have a saying for this: "All publicity is good publicity." The more people hear about the KKK, the more potential recruits they have. Even if it's 1 out of every 1,000.
The only time this works is if a bad idea has rooted itself so firmly and extremely that it starts wielding violent ends to achieve its desires, like the KKK of the past which ran around hanging blacks. They finally started getting busted for it and were forced to fuck right off to their little hate hole to die. We should leave them there to die or reform as they decide, not keep trying to punish them for wrong think. Because while I consciously know that what they believe is wrong, they're never going to change by force. You can't change people by force, it doesn't work. Also, you know, slippery slope and all that jazz. It's easy to start with the KKK. It'll get less amusing when it eventually spirals out to hurt other people.
This is just Anonymous looking for free, easy public opinion points. The sad part is, because everyone hates the KKK, it's going to work. Which amuses me immensely. Because who really believed we grew past the Crusades and the Inquisition and Jihads? People want their blood sacrifices to the holy alter of righteousness. They're gonna get em', one way or another.