A couple of weed-packing anti-Trump crusaders were arrested after going berserk on four Trump supporters outside Trump Tower Saturday night, according to police sources.

The quartet were waving a flag in support of the president at 6:15 p.m. when Elizabeth Hall, 22, allegedly started screaming at them and tried to wrestle their banner away, the sources said.

Hall’s boyfriend, Matthew Newmann, 22, then jumped in and allegedly tried to take a swing at one of the Trump fans, but missed.

Cops then collared the couple, and plan on charging Hall with harassment, criminal possession of a weapon, and possession of pot, and Newmann with disorderly conduct, sources said.