N.Y. Crim. Proc. Law § 260.20

§ 260.20 Jury trial; defendant's presence at trial.\n A defendant must be personally present during the trial of an\nindictment; provided, however, that a defendant who conducts himself in\nso disorderly and disruptive a manner that his trial cannot be carried\non with him in the courtroom may be removed from the courtroom if, after\nhe has been warned by the court that he will be removed if he continues\nsuch conduct, he continues to engage in such conduct.\n