6/28/2007HOUSTON - A 19-year-old man flew into a rage in a Houston courtroomafter a Harris County jury sentenced him to death for murder.Dexter Johnson began knocking down chairs before he was tackled by abouta dozen courtroom officers, who ushered him out a side door.The outburst began when Johnson's family members screamed and wailedafter hearing his sentence for the capital murder of Maria Aparece. Oneperson collapsed and an ambulance was called.Evidence presented to the jury showed that Johnson was one of fivepeople who carjacked Aparece and her boyfriend, Huy Ngo, on June 18,2005, as the couple talked in her car outside Ngo's home.Prosecutors said the five threatened the couple with a shotgun and apistol, forced them into the backseat, then drove them around Houstondemanding money, credit cards and ATM access numbers.Johnson then raped Aparece while Ngo was forced to listen, forced thecouple out of the car and into some woods, and shot both in the head.The five, including an unidentified juvenile, also are suspected in acrime rampage that included two other slayings. Three await trial oncapital murder charges in the incident.