One of the most prominent investigators into antisemitism had his YouTube account mistakenly deleted because it contained examples of the hate speech the platform is now cracking down on.
The video site began a clamp down this week on Holocaust denial, after social media sites were accused of failing to stem its spread on their platforms.
David Collier tweeted that YouTube had barred his videos on Thursday "probably because, as a fighter against antisemitism, I share examples of it".
"It's so hurtful. Hours and hours of unique, irreplaceable footage gone," he said. "Oh the antisemities are dancing today!"
