Whether California aiding-and-abetting liability requires proof that the defendant intended or purposefully sought to commit, encourage, or facilitate the target crime, rather than merely knew of the perpetrator’s unlawful purpose and performed an act that in fact assisted it.
Holding
Yes. An aider and abettor must act both with knowledge of the perpetrator’s unlawful purpose and with the intent or purpose of committing, encouraging, or facilitating the target offense.
Reasoning
Penal Code section 31 makes aiders and abettors principals, but it does not eliminate the criminal-intent requirement imposed by Penal Code section 20 and longstanding California law. Decisions dating to People v. Dole treated “abet” as including knowledge of the perpetrator’s wrongful purpose plus counsel or encouragement in the crime. Encouragement itself ordinarily carries a purpose to further the encouraged result.
The Court rejected the view that knowledge of the perpetrator’s criminal purpose, coupled with conduct that objectively helps, is always sufficient. Knowledge and helpful conduct may support an inference that the defendant intended to assist, but they are evidence from which intent may be found; they are not a legal substitute for the intent the prosecution must prove.
People v. Terry did not dispense with an aider and abettor’s own criminal intent. Terry established that an accomplice need not personally intend to enjoy the fruits of the offense, such as the stolen property, but it also recognized that presence and other circumstances support a finding that the defendant specifically intended to commit or assist the robbery. Likewise, People v. Tewksbury required guilty knowledge and intent and is best read as allowing intent to be inferred from voluntary conduct performed with knowledge of its probable criminal consequences.
For crimes requiring a specific intent beyond the basic criminal act, the aider and abettor must share that specific intent. “Share” does not mean the aider must be willing personally to carry out the crime or seek its proceeds. It means that the person knows the full scope of the perpetrator’s criminal purpose and gives aid or encouragement intending or purposefully to facilitate the crime.