Speeding “Hell on Wheels” killer Mackenzie Shirilla’s father called his daughter “dumb” during a heated showdown with cops after her November 2022 arrest , newly released bodycam footage shows.  Steve Shirilla hurled the insult while demanding officers at the Strongsville Police Departmen t let him speak with his then-18-year-old daughter, who had just been taken into custody on double murder charges – more than three months after the fiery car crash that killed her ex-boyfriend and friend .  “