California, United States of America
The following excerpt is from People v. R.M. (In re R.M.), 2d Juv. No. B282441 (Cal. App. 2018):
An officer may conduct a brief, investigatory stop that is consistent with the Fourth Amendment when the officer has "reasonable, articulable suspicion that criminal activity is afoot." (Illinois v. Wardlow (2000) 528 U.S. 119, 123.) We exercise our independent judgment to determine whether on the facts presented, the detention was reasonable under the Fourth Amendment. We defer to the juvenile court's factual findings if supported by substantial evidence. (Robey v. Superior Court (2013) 56 Cal.4th 1218, 1223.)
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