TORY MP Zac Goldsmith was accused of a “shameful” political smear yesterday after he shared a social media post linking the Barcelona terrorist attack with left-wing Labour group Momentum.

Mr Goldsmith’s brother Ben commented on a Twitter posting that revealed one of the attackers had shared an anti-semitic video alleging “a global Jewish conspiracy to take over the world.”

Ben Goldsmith wrote: “Maybe he got it from Labour’s Momentum movement? They make for weird bedfellows, Islamism and hard leftism, but they’re joined at the hip.”

The comment was retweeted by the MP for Richmond, who was accused of running one of the most racist campaigns in recent history in the run-up to the 2015 London mayoral election, in which he was defeated by Labour’s Sadiq Khan.

Momentum national spokeswoman Emma Rees said: “On behalf of Momentum, I offer our solidarity and condolences to all of those affected and urge Zac Goldsmith to retract his comments, apologise and show some respect for those who died in this tragic attack.”

Mr Goldmsith had not responded when the Star went to press.