After all, nobody would complain if the KKK had brought Microsoft Office licenses, any more than they'd complain if the KKK had brought food at wal-mart.
But many tech companies have realised how profitable it is to be Facebook or Github. They own the domain, their name's in the banner at the top of the page and the name of the native app, they pay all the hosting costs and make all the ad money, and they've put themselves in the situation where they can censor users.
When we in tech moved away from "we just sell the stuff, none of our business what you do with it" and made "what you do with it" the core of our businesses, we were walking into the realm of politics whether we realised it at the time or not.