The mourning mom of slain NYPD hero cop Jonathan Diller glared at her son’s accused killer in a Queens courtroom Tuesday — but the thug didn’t have the guts to look her in the face.
Guy Rivera, 35 — who allegedly fatally gunned down the 31-year-old officer and married dad during a 2024 car check in Queens — wore a surgical mask and crouched down for the procedural hearing, refusing to face mom Fran Diller, who had dozens of New York’s Finest there supporting her.
Rivera even had to be told repeatedly to pull down his face mask so witnesses on the stand could identify him.
The hearing was part of a “Dunaway” proceeding before a murder trial that establishes whether police had probable cause to approach and arrest a defendant…