Yeah, that will help earn him a spot on the local PD... :thumbsdown:
ARS 13-408. Justification;
use of physical force in defense of property
A person is justified in using physical force against another when and to the extent that a reasonable person would believe it necessary to prevent what a reasonable person would believe is an
attempt or commission by the other person of theft or criminal damage involving tangible movable property under his possession or control, but such person may use deadly physical force under these circumstances as provided in sections 13-405, 13-406 and 13-411.
If they just broke one window, one could reasonably believe they aren't done with whatever they are doing and that force is necessary to prevent the commission of further damage, or reasonably believe that breaking the window is a precursor to theft of objects within the vehicle or the vehicle itself, which you have a right to stop with physical force.
If they run:
ARS 13-3884. Arrest by private person
A private person may make an arrest:
1. When the person to be arrested has in his presence committed a misdemeanor amounting to a breach of the peace, or a felony.
2. When a felony has been in fact committed and he has reasonable ground to believe that the person to be arrested has committed it.
Other statutes which escape me at the moment cover the right to pursue and detain the person using minimal necessary force until PD can arrive to take custody and use of escalated force if in the process of lawful detainment the person resists and presents a threat.