Raul Cortez, convicted this week of capital murder was a member of a violent street gang while growing up in Chicago, witnesses told a Collin County jury Friday. The testimony came during the punishment phase in the trial of Raul Cortez, who was found guilty Thursday of killing four people inside a home here during a botched robbery plot. The same jury must decide whether Cortez should die for the crime or be sentenced to life in prison with the possibility of parole after 40 years. Cortez was convicted for the March 12, 2004, shooting deaths of Rosa Barbosa, 46; her nephew, Matthew Barbosa, 25; and his friends Austin York, 18, and Matthew Self, 17.On Friday, the jury saw photographs of gang symbols – as well as a Bible verse and a cross – tattooed on Cortez's body. Similar symbols and gang colors appeared on Cortez's MySpace page at the time of his arrest in 2007, McKinney police Detective Diana Tilton testified. Chicago police Officer James Vins testified that the group was t...