A young protester with a history of vandalism whose arrest by last month went viral after she was tossed in an unmarked police van, has been nabbed for an 18th time, sources said.

Nikki Stone is accused of criminal mischief for allegedly graffiting a window on the 7 train in Queens, sources said.

Stone, 18, who has been accused of damaging NYPD cameras and graffiting the Oculus inside the World Trade Center, was arrested Thursday by the NYPD and received a desk appearance ticket. The same day, she was arrested by the Port Authority on an open graffiti case, a source said.

Both de Blasio and Gov. Andrew Cuomo decried the NYPD over a now-viral video showing cops picking up Stone in an unmarked van for vandalizing police gear at a protest near City Hall Park.