was targeted by vandals on Tuesday night.The portrait of the American security guard was created in the weeks following his death on May 25.Akse - who has created a number of murals across the city - started work to repair the mural on Wednesday morning.He was seen wearing a facemask and using spray paints to rectify the artwork - which was repaired in just over 30 minutes.He told the Manchester Evening News: "I do not tolerate racism as I suffered from it since childhood, so I went back to fix