Antisemitism envoy Deborah Lipstadt calls latest tweet by Ali Khamenei 'egregious' and dangerous for a head of state, with pro-Israel advocates renewing calls to ban his account

'In Buchenwald he would have liked to be seen with his Star of David,' man writes about German-Israeli singer Gil Ofarim, who is accused of lying about an antisemitic incident

Resignation of head of new US disinformation board highlights issue; far-right extremist called Nina Jankowicz a 'nasty ... Jew,' on his podcast, although she is not Jewish

Jewish civil rights group says system, dubbed Online Hate Index, can sift through millions of posts to detect hateful content, aid removal