Labour leader Ed Miliband has condemned the antisemitic abuse targeted at his shadow cabinet colleague Luciana Berger.
Mr Miliband said the abuse was “utterly appalling” and urged social media companies to do more to tackle the problem.
The JC had earlier revealed the extent of the attacks – including death threats – aimed at Ms Berger in the past ten days.
A neo-Nazi website based in the US is behind the co-ordinated campaign.
