Well, several people brought up the "#killallwhitemen" woman a few times. Somehow I doubt it would have been vigorously defended as just a joke if she'd taught a cat to meow in response while repeating it, but I could be wrong
People on NeoGAF were defending it, you can go check that topic. I pointed out earlier tips sent to the police are fine to check out, but thankfully that case was dropped (I think it was anyway) after it was clear her intent was not actually to go on a killing spree. She didn't need a criminal record for a #killallwhitemen tweet. Not if there wasn't credible evidence of an actual threat, and a hashtag like that is not directly targetting anyone. White men aren't a single entity.
Bahar Mustafa was charged in October 2015[29] for threatening communications on a social media platform. The wording of the statement made by the police[30] suggested two separate charges, one under Section 127 and another under the Malicious Communications Act. It was widely speculated that the communications were relating to the hashtag "#killallwhitemen".
Most people that end up tweeting stuff like that take a beating online and maybe get fired from their job. I'm not convinced in a case like #killallwhitemen after its apparent its attention seeking, should result in a criminal record or jail sentence.