The Secret Service detail assigned to Kamala Harris’ stepdaughter arrested an “anti-police watcher” during a heated altercation on a NYC sidewalk on Tuesday, video shows. Ella Emhoff, the daughter of Second Gentleman Doug Emhoff, was inside a Tribeca restaurant for lunch around 12:40 p.m. when Harry Heymann– who lives around the corner — confronted her detail outside, according to cops and the clip. The 45 year old goes around the city complaining about cars that have NYPD parking placards that can park wherever instead of driving around the block, sources said.