A two-car collision at Broadway and Cesar Chavez Avenue in L.A.’s Chinatown neighborhood left one person dead and six others injured, authorities said. An 18-year-old man was killed and six people were injured in a hit-and-run crash outside a Starbucks in L.A.’s Chinatown neighborhood, authorities said Saturday. The rollover crash occurred when a vehicle traveling on Cesar Chavez collided with …