Can you interfere with police even when their detention is unlawful? American Fork v. Pena-Flores Explained

In American Fork v. Pena-Flores, the Utah Supreme Court addressed a critical question about the scope of the interference with police statute: does Utah Code section 76-8-305 require that the underlying arrest or detention be lawful for a conviction to stand?

Background and Facts

During a gang interdiction operation at the Steel Days carnival in American Fork, police officers were detaining suspected gang members to update intelligence files and photographs. Pena-Flores, who was not known to officers, stepped forward and told the detainees they did not have to cooperate with police, answer questions, or have their pictures taken. Despite repeated warnings from officers to step back, Pena-Flores continued encouraging noncompliance and agitating bystanders. An officer eventually arrested him for interfering with a peace officer under Utah Code section 76-8-305(3).

Key Legal Issues

The central issue was whether the phrase “seeking to effect a lawful arrest or detention” in the interference statute requires that the underlying detention be constitutionally sound. Pena-Flores argued his conviction should be overturned because the gang member detentions lacked reasonable suspicion and were therefore unlawful.

Court’s Analysis and Holding

The Utah Supreme Court affirmed, applying correctness review to the statutory interpretation question. The court held that the statute’s plain language—particularly the phrase “seeking to effect”—demonstrates that the law protects officers acting within their scope of authority with indicia of lawfulness, regardless of whether the underlying detention is ultimately deemed unlawful. The court emphasized that disputes over police authority should be resolved through “orderly judicial proceedings, not in the street.”

Practice Implications

This decision clarifies that interference convictions can stand even when the underlying police action is constitutionally deficient. Practitioners defending interference charges should focus on whether the officer was acting within their scope of authority and whether the detention had indicia of lawfulness, rather than challenging the constitutional adequacy of the underlying stop. The ruling reinforces Utah’s preference for resolving police authority disputes through judicial channels rather than street confrontations.