Under what condition can police conduct a stop and frisk?

Police can conduct a stop and frisk when they have reasonable suspicion of criminal activity. This standard is lower than probable cause and is based on the officer's observations and experience. The stop allows officers to briefly detain an individual to investigate possible criminal activity, while the frisks enable them to ensure that the individual does not have any weapons that could pose a threat to their safety. This practice is grounded in the Fourth Amendment, which allows for limited searches when there is a belief, based on specific and articulable facts, that a person may be involved in criminal conduct.

The other conditions, such as having probable cause of a felony, are not applicable in the context of stop and frisk, as probable cause is required for an arrest or a more invasive search. Responding to a domestic call does not, by itself, justify a stop and frisk unless the responding officers have reasonable suspicion during their engagement with individuals involved. Lastly, while a tip from a confidential informer might be a valuable source of information, it must be corroborated or combined with other observations to establish reasonable suspicion necessary for a stop and frisk.