A Labour MP is urging the Home Office to revoke leftwing political commentator Hasan Piker’s visa ahead of his appearance at a festival in London next week. Piker, perhaps America’s most popular and recognisable leftist influencer, is billed to speak at a SXSW London event called ‘How the American left learned to speak the internet’ in June. Labour MP for Hemel Hempstead David Taylor has called on the Home Office to revoke Piker’s visa on the …