Comedian Jack Black’s bandmate sparked a furious backlash after making a joke about the assassination attempt on former President Donald Trump. The former US President was shot in the ear during an attack at a campaign rally on Saturday which left an audience member dead and two critically injured. Black, 54, appeared on a Sydney stage hours later presenting his Tenacious D bandmate Kyle Gass, 64, with a birthday cake during their performance. In a clip which has circulated online, Black instructed Gass to “make a wish,” to which he replied: “Don’t miss Trump next time.” While the crowd in att…