India, April 6 -- British Prime Minister Keir Starmer has expressed concern about planned concerts in London by US rapper Kanye West, who has a history of anti-semitic outbursts. Campaigners against anti-semitism added their voices to the protests on Sunday and Pepsi, sponsors of the festival concerned, pulled out of the event. The 48-year-old hip-hop star - now known as Ye - is due to play three nights at the Wireless festival in London in July as part of a European comeback tour. Starmer told The Sun newspaper on Saturday it was "deeply concerning Kanye West has been booked to perform at Wireless despite his previous anti-semitic remarks and celebration of Nazism". Starmer added that "anti-semitism in any form is abhorrent and mustbe conf...