Trayvon Martin, the 17-year-old who was shot and killed by a neighborhood watch volunteer, had the drug THC in his system the night of this death, according to new information obtained by ABC News. The revelation came as prosecutors in the case prepared to release to the public hundreds of pages of new evidence along with videos and crime scene photos. Martin's death sparked public outrage after police released Martin's shooter, George Zimmerman, without any criminal charges for the killing. Zimmerman, 28, is a multi-racial Hispanic man who shot the black high school junior at close range on Feb. 26,...