Relevant that this was in New York? Not very. Could this happen in another US City? In some, would be slightly different in others. Outside the US? Same. Time relevant? No.
Would the police have reacted the same way had he not committed the petty crime many times? Yes.
Was the minor crime related to theft? traffic violations? disorderly conduct? drugs? No to all.
Did Patrick warn the police of an imminent danger? Yesish. Of another crime going on? Yope.
Is this based on a short story? No.
Was Patrick himself recently a victim of a crime? No.
Was there something relevant about the circumstances of that particular day? Noish.
Did he anticipate that he would be pulled aside and questioned? Probably. Did he anticipate that he would then be let go? Irr., he might or might not have.
Is he ultimately doing something helpful for the police? Yes. Is he doing it for his own selfish interest? No or not primarily. Will the questioning result in something negative (incriminating information, an arrest etc) for another criminal? YES.