Finding antisemitism on Twitter is easy, but it’s surprising how few attempt to stop it, as witnessed by the 170,000 plus followers of the Anonymous Operations account.
Remembering that wherever you find racism, sexism and the degradation of women is often not far behind.
My first storify looks briefly at the issues, Holocaust Denial at Anonymous.
Elsewhere, there is a nice tumblr account which tries to track this form of racism.
Finally, Oliver Hotham is blogging and always worth a read.