Promoting censorship is dangerous. Twitter is an option-- NOT a requirement. This is easily the 10th nearly identical article some arrogant reporter has written about their choice not to use a social media service.
America is a community, yes we need "some form of moderation", but we enter into a very slippery slope when anybody but the community chooses what "moderation" means.
Reddit is a decent example-- albeit still flawed; of how this can work. It is states right, sharding, seperation of concerns, or a subreddit type model where small microcosms choose what is acceptable.
I dont agree with the KKK and hate speech is terrible, but if it is limited to speech I am all for it. I, like I assume many, will use my power to ostracize and dissiauade people from being hate mongering racists-- but it is helpful when I can identify who they are when they self-select to dress up like ghosts 365 days a year instead of just the end of october like many other Americans do.
Edit: to be clear, I am all for free speech & freedom to organize-- not all for the kkk obviously...