Anthony Pappas, the 72-year-old Republican who ran against Alexandria Ocasio-Cortez in November, shadowed the freshman Democrat at an Astoria Park event Saturday – and had to be shooed away by cops when he got too close.

Pappas, a professor at St. John’s University, was distributing stapled copies of an eight-page manifesto about his grievances against the judicial system, including complaints about unfair sentencing and a lack of accountability for judges, and ranting to passersby.

Staffers blocked him from approaching Ocasio-Cortez as she took selfies with supporters at the Alexandria Ocasio-Cortez 5k “fun run.”

“I wanted to tell her about judicial immunity and judicial accountability,” Pappas told The Post, after two police officers guided him away from AOC and her group. She did not seem to acknowledge him.

“She could have at least been polite,” he added.

Ocasio-Cortez has generally complained about receiving threats.

Pappas, a first-time candidate, lost his congressional bid by a 65-point margin in the overwhelmingly Democratic district.