This is a very good article on the success of deplatforming far right activists from social media:
https://www.hopenothate.org.uk/2019/10/04/deplatforming-works-lets-get-on-with-it/Quote
Facebook’s decision to finally act dramatically curtailed Britain First’s ability to spread hate and left it on small, marginalised platforms, with its following on Gab now just over 11,000 and similarly small – just over 8,000 – on Telegram. This has undoubtedly been a key factor in the decline of Britain First as a dangerous force in the UK.
Those who’ve been deplatformed on the far right have articulated how it has severely retarded their influence. Milo Yiannopoulos recently moaned:
“I lost 4 million fans in the last round of bans. […] I spent years growing and developing and investing in my fan base and they just took it away in a flash.”
He goes on to state how he and others have simply failed to build a following on platforms such as Telegram and Gab that are large enough to support them. “I can’t make a career out of a handful of people like that. I can’t put food on the table this way”, he explained.
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However, it is possible to value and uphold freedom of speech and expression while simultaneously calling for the removal of dangerous extremists from social media platforms. We must not confuse their right to say what they please (within the law) with their right to say it wherever they please: a right they do not have.
Now you know why you don't hear about Tommy Robinson anymore.