It's only free speech until people start getting hurt.
I have no problem that these websites were hosted and allowed until they started getting in the business of organizing public rallies that spawn violence.
Though these are dark days for American exceptionalism, the US remains distinct in its commitment to freedom of speech. Even as many Americans increasingly favor European-style limitations on hate speech, the constitutions first amendment ensures that any such legislative effort is likely a non-starter.
But the fate of the Daily Stormer as vile a publication as it is may be a warning to Americans that the first amendment is increasingly irrelevant.
Historically, the place you went to exercise your speech rights was the public square. Now the equivalent is Twitter and YouTube and Facebook, said Daphne Keller of the Stanford Center for Internet and Society. In a practical matter, how much you can speak is not in the hands of the constitution but in the hands of these private companies.
The idea of social media platforms as the modern public square was recently endorsed by the US supreme court, which ruled unanimously that barring sex offenders from Facebook and Twitter violated their first amendment rights.
https://www.theguardian.com/technology/2017/aug/28/daily-stormer-alt-right-cloudflare-breitbart?utm_source=esp&utm_medium=Email&utm_campaign=GU+Today+USA+-+Collections+2017&utm_term=241368&subid=19104199&CMP=GT_US_collection