I agree with TAR, I think in this instance pepper spray would have led to much worse things. If you do wish to go that route:
The New York State Self-Defense Spray Law - Penal Law 265.20
Requires special labeling and control of sales. In order to purchase this product the law states:
• You must be over the age of 18.
• You must have no history of felony convictions or assaults.
• Product must be purchased from an authorized dealer, pharmacy or gun dealer.
• You must complete a form with your name, address, birth date and signature.
REMEMBER
• You can’t bring a spray from another state into New York.
• You can’t buy it online.
• You can’t give it to a minor.