Lots of SJW and subs and subs run by anarchocommunists regularly call for violence and cheer it on when it happens. There are subs where "tankies" unironically justify gulags and sometimes even genocides that happened under communist regimes. This has been brought to the attention of reddit admins who happily ignore it. Just a usual case of double standards and the rules not applying to SJWs.
I remember one comment I saw last year that said "James Damore needs to get a bullet to the head" that got hundreds of upvotes. One reply said they were against the notion....because, in their words, a death by gunshot "wouldn't be painful enough". Also upvoted. For those unaware, James Damore was the Google employee who made an internal memo about why he was opposed to gender quotas. Redditors unironically think this is a crime worthy of a painful death.
I agree with @MysteryMan though. Ultimately we're better off having our own website where we have far more control and self-determination. Also it's waaay easier to moderate. Back on /r/incels I had to ban 20-50 brigaders per day and azavii banned more than 100 a day. Redditors don't brigade this place on the level they did on /r/incels because it's too inconvenient for them. Of course it does come with the challenge of dealing with lookism trolls but they're in much smaller numbers than numales.