## Facts

- At a New Year’s gathering in Lake Los Angeles, Jose Jesus Medina, George J. Marron, and Raymond Vallejo attended with others; alcohol and methamphetamine were being used.
- Ernie Barba arrived with Krystal Varela; Vallejo asked Barba “Where are you from?,” understood in gang culture as a confrontational challenge.
- Barba and the defendants, identified as street-gang members, engaged in a fistfight triggered by perceived disrespect.
- After the fistfight ended, Barba returned to his car and began driving away with Varela.
- Medina retrieved a gun and fired at the departing car, killing Barba and supporting an attempted-murder charge as to Varela.
- Medina was tried as the shooter; Marron and Vallejo were tried as aiders and abettors under the natural and probable consequences doctrine, with simple assault as the target offense.

## Issues

1. Whether substantial evidence supported the jury’s finding that murder and attempted murder were natural and probable consequences of the target offense of simple assault for purposes of aider-and-abettor liability.
2. Whether the appellate court applied the correct deferential standard when reviewing the jury’s foreseeability determination.

## Decision

- The California Supreme Court reversed the Court of Appeal’s judgment as to Marron and Vallejo and reinstated their murder and attempted-murder convictions.
- The court held that a rational jury could find the shooting was a reasonably foreseeable consequence of the assault in the circumstances presented.
- The court left undisturbed Medina’s convictions as the actual perpetrator.
- The court concluded the Court of Appeal improperly reweighed the evidence rather than applying substantial-evidence review.

## Legal Principles

- An aider and abettor of a target offense is liable for a nontarget offense committed by a confederate if the nontarget offense is a natural and probable (reasonably foreseeable) consequence of the target offense.
- Foreseeability is an objective inquiry: whether a reasonable person in the defendant’s position would have known the charged offense was a reasonably foreseeable result of the aided act.
- Foreseeability is generally a jury question; on appeal, the reviewing court asks only whether any rational trier of fact could have found foreseeability beyond a reasonable doubt, viewing the record in the light most favorable to the judgment.
- Even when the target offense is labeled “simple assault,” the surrounding circumstances (including gang challenges, retaliation norms, intoxication, and the likelihood of firearms) may support foreseeability of lethal escalation.

## Conclusion

The court held that, given the gang-related challenge and assault and evidence that such confrontations commonly escalate to gun violence, a jury could reasonably find the subsequent shooting was a foreseeable consequence of the aided assault, making the nonshooting participants liable for murder and attempted murder under the natural and probable consequences doctrine.


People v. Medina, 46 Cal. 4th 913, 209 P.3d 105 (Cal. 2009)