Can minors who were escorting out of a fair when the police failed to properly investigate their conduct have the burden of proving that the police were acting lawfully?

This contention focuses too narrowly on only one function of police -- investigating criminal activity. But the police's function is not limited to investigating criminal activity. Rather, it also includes things such as "crowd control or public safety," which are "not the kind of [things] that involve[] suspicion, or lack of suspicion, of the relevant individual." (Illinois v. Lidster (2004) 540 U.S. 419, 424-425 [157 L.Ed.2d 843, 851].) Here, the minors were part of the 18 to 20 teenagers who police were escorting out of the fair. As appellants, the minors have the burden of showing insufficient evidence that the police were acting lawfully. Because they have focused too narrowly on only one aspect of a police officer's duty, without showing that there was no legitimate basis on which the officers were performing their other duties (such as crowd control or public safety), the minors have not carried their burden to show insufficient evidence.