I’d like remind everyone that you are free to curate your internet experience however you please. When your internet experience starts to suck because people are trying to make your life miserable, you are free to deal with that as you see fit.
You are free to withdraw from a space. You are free to ban and block. You are free to call on friends for help. You are free to dig in and argue with every entitled douchebag who comes along trying to win a war of attrition in order to force you out of that space. You are free to be pseudonymous; you are free to use your real name. You are free to publicly disagree with them, even via a blog post if you so choose; or you can privately disagree with them amongst a small tight-knit circle of friends and allies. You can use any number of block-list services like Akismet, RBL, the A+ Block Bot, or even a whitelist-only setup like making your Twitter account Private. You can engage with everyone who thinks the internet is a debate club, or you can ignore those people, or you can block them.
And be damned anyone who says that this is “fascist”.