Ms Healy, a Nottingham City Council member, later apologised, writing to her 1,600 followers: “Profound apologies for that retweet which was a genuine mistake and would never have been retweeted had I recognised it for what it was.”
The leader of the authority’s Tory group said the post had “trivialised the horrors of the Holocaust”.

Mike Freer, Conservative MP for Finchley and Golders Green, said the tweet showed Labour had “plumbed the depths”.