By Chris Jose, kdvr.comDENVER — A group of food truck workers say they were attacked on the Rockies’ home opener at 19th and Market streets near Coors Field on Friday. The Denver Police Department is investigating the assault and says it hasn’t ruled out the possibility it was racially motivated. "He kept using the 'N' word," said Terrance Gibbons, owner of Big T's Barbeque.