Jack Black has decided to cancel the remainder of his band Tenacious D’s tour following comments made by bandmate, Kyle Gass. On Sunday evening while performing in Sydney, Australia, Gass sparked outrage when he joked about the assassination attempt on Donald Trump in Pennsylvania. The former US President was shot in the ear by a 20-year-old shooter at a rally on Saturday evening, while one attendee was killed and two others hospitalised. Hours later at their gig, Black asked bandmate Gass to make a wish to mark his 64th birthday. The musician appeared to reply to Black in front of concertgoer…