Pretty silly joke because everyone knows for one day at least everyone is looking for solidarity not division. So Colin should have just refrained from being an edge lord for one day. Not much to ask. The 'joke' would have been less hostile in a few weeks, in terms of the outrage. Not a joke I'd attempt myself (it's overdone and not really funny), or really care for, but Colin is Colin in terms of pushing buttons. A silly tweet doesn't stop a good day of global work.
However, the internet character assassination machine will have won. I do expect him to quit KF now and do his own thing. You might see that as a win, you might not, but it will probably happen. Especially when his own team pretty much hinting it's time to go. Even Greg who's supposed to be his best friend (as in he knows him personally better than the planet).
My personal opinion is the usual with twitter and FB drama, 90% of people should just unfollow, block, ignore, but 10% are okay calling him out as they can do it without going for the jugular of we want your job, your income, your livelihood and for your life to fall apart over an insensitive joke. We want you completely destroyed. KF may be independently funded but many people want Colin to suffer to the extremes of losing everything, and will find a moral win in seeing it unfolding. Of course, Colin being dumb can be the rock beginning to roll down the hill to his own path of self-destruction, but the internet often jumps to firing a boulder down that hill at the speed of light.
Just my 2 cents, and I do think you'll now see him leave KF. Getting onto Dave Rubin clearly got to his head. As much as you may want to call it pseudo-censorship, Twitter should not be your personal dumping ground for jokes and comments that may be better off said behind closed doors and with family (like simply Colin to his GF if she laughed at it). At least not in today's climate if you have a public job and/or are a public figure. It's not worth it, and masses of people can most certainly get you deplatformed, fired or damage your income. As can your own self-arrogance and behaviour, but there is still importance in being able to separate genuinely dangerous and/or callous everyday people, from focusing so much energy, time and effort on edge lords, trolls and those trying to be a 'low effort' stand up comedian. Largely speaking, leave the political/social commentary jokes to actual comedians, stick to dick and fart jokes if you want to use your personal social media accounts for the 'lolz'.
People tweeting never learn and we'll have a new Twitter hot take next week seeing someone self-implode and masses of people angry. Social media was a mistake, it's nothing but trash.
ps. Colin if you're reading this topic, which you may well do as you are a bit of an egomaniac (observation, not criticism!), what you should take for the above is the tweet itself is done by you and you only, so you should know better in 2017 what the consequences may be. After your public and no doubt private remarks with Rubin, you both know fine well what consequences can be served up due to twitter/FB posts (yes, even insensitive and/or edgy jokes). If you leave KF it will be partly of your own making, however that being said given you are who you are it might be where your career would lead anyway, funding/show of your own, and maybe even in politics instead of games if that is your true passion. None of us know your private comments with the rest of KF, but from the outside it does seem, maybe understandably, they're airing on the side of the angry twitter folks and trying to calm those flames, rather than with you (as always people threaten their livelihood too). It's Always Sunny 24 hour news cycle, a few days time most will have moved on... Probably.