Two left-wing content creators have been blocked from entering the United Kingdom after they said the Home Office revoked their visas. US citizens Hasan Piker, who is a Twitch streamer and political commentator and Cenk Uygur, who co-founded and hosts left-wing populist show "The Young Turks" on YouTube, were both due to speak at the SXSW London festival and an event in Oxford. The pair have blasted the UK government, claiming they were "banned for criticising Israel". Piker has come under fire