That particular subreddit isn't shut down, it was temporarily suspended as the moderators simply got overwhelmed. There's no indication of bad faith from either the mod team nor the reddit admins, the floodgate was just too much for them to handle. It pretty much says so in the ban message, admins are gonna help them take back control and it will be up within a couple of days.
To be even more precise, here's the message from the source;
> This community has been banned
> This subreddit has been temporarily banned due to a prevalence of violent content. Inciting and glorifying violence or doxing are against Reddit’s platform-wide Rules. It will reopen in 72 hours, during which Reddit will support moderators and provide resources to keep Reddit a healthy place for discussion and debate.
