E.R.

This is one of four appeals now before us arising from a single trial in which wardship and commitments to the Division of Juvenile Justice (DJJ) have been imposed on four minors for their roles in a gang-related shooting in which one innocent youth was killed and another wounded.

*468 On March 16, 2007, Antwanisha Morgan, Thomas J., 1 Antoine S., Chante R, and other young people were talking outside a recreation center in the Bayview district of San Francisco. About a month earlier, some of these youths (not identified as members of any gang) had chased members of the G-3 criminal street gang away from a talent show at the International Studies Academy (ISA), a high school, in the Potrero Hill district where the gang members had started a disturbance. On March 16, three members of the G-3 gang, T.Tr., E.R., and D.B., came to the recreation center and two of the three shot at the group of youths that were congregated there, killing Antwanisha and wounding Thomas J. Immediately after the shooting, all three drove off in a waiting car driven by Kamisha Gray and occupied by two other gang members, T.Tu. and another youth. An expert on criminal street gangs testified that he…