TORONTO Two friends tried to protect each other from a gunman intent on revenge for a petty slight outside a crowded Toronto nightclub in 2017, Ontario Superior Court heard Thursday but both ended up being gunned down. The double tragedies, occurring just seconds apart after 3 a.m. that morning, show how suddenly lethal guns can be, prosecutors said, as they pressed Justice Peter Bawden to find one of the accused, Tanade Mohamed, guilty of second-degree murder. “How many cases do we have when someone intervened when the gun came out and it’s an unfortunate end?” Crown lawyer Anna Tenhouse told the court on Thursday. “We see innocent people getting shot all the time when a gun gets in the way.”