KANSAS CITY, Mo. — Several people have been shot after gunfire erupted during the Kansas City Chiefs’ Super Bowl victory rally Wednesday, a police spokesman said. “At the conclusion of the rally there were shots fired west of Union Station near the garage, and several people were struck,” said Capt. Jake Becchina, a spokesman for the Kansas City Police Department. Officers have detained two armed people for more investigation, Becchina said. “We need people to exit the area as quickly and safely as possible and avoid the parking garage in order to facilitate treatment of shooting victims,” Bec…