A common misconception is that law enforcement officials are entitled to stop and question citizens without any basis or reason for doing so. In reality, a set of firm legal guidelines are in place that govern whether or not an officer is permitted to stop and frisk nearby pedestrians.
For a police officer to stop someone, the officer must have a reasonable belief that a crime is either being committed or about to be committed. While this standard falls well below the probable cause an officer must have to arrest or search a suspect, an officer must be able to identify and articulate specific facts that explain their reasonable belief that the person stopped has been engaged in criminal activity. Circumstances considered in justifying an officer's reasonable belief are whether an individual is near where a crime was recently reported, whether the individual matches a suspect description, whether or not the individual attempts to flee, and whether the individual exhibits nervous or agitated behavior upon being stopped. It is important to note that while an officer may stop an individual based upon a reasonable belief, the individual being stopped is not required to respond to the officer and may only be arrested if their responses or actions create probable cause for arrest.
