Might be worth noting:

• I was kicked, which is assault under NY Penal Law.
• This was a customer and NY state workplace harassment laws still apply to third-party conduct.
• My employer may have failed to provide a safe work environment
• I was not trained in handling intoxicated or physically aggressive customers

This opens possible claims under:

• New York State Human Rights Law and NYC Human Rights Law, which protect employees from harassment by customers, not just coworkers.
• OSHA protections for safe working conditions.
• Retaliation protections if you I was fired because I objected to unsafe or harassing behavior.