A protester upset over Democratic presidential candidate Bill de Blasio’s handling of police brutality in New York City interrupted his do-or-die CNN town hall.

The New York mayor has been relying on the national exposure to boost his flagging fundraising effort and poll numbers before the deadline for the third round of debates. He was heckled by a studio audience member Sunday night after he was asked about his inaction following the choking death of Eric Garner by an arresting officer in 2014. Gardner had been suspected of selling single cigarettes.