A live stream of Shia LaBeouf chanting was disrupted by Nazi-themed dancing. Then things got weird.

LaBeouf is a Hollywood star who recently restyled himself as a highly meme-able performance artist — limiting his public utterances to a string of repeat tweets, for example, or showing up to a film festival with a paper bag on his head.

4chan is the magmatic underworld of the Internet: an anonymous forum whose millions of users gave the world the delights of Rickrolling, the misogyny of Gamergate and the corruption of Pepe the Frog.

Lately, 4chan’s vast energies have been spent disrupting a single webcam. LaBeouf’s art group installed the camera outside a museum in New York on Jan. 20, inviting the public to join the star in chanting: “He will not divide us … he will not divide us.”

“He Will Not Divide Us” was supposed to last the duration of Trump’s first term.

Almost instantly, 4chan users turned the live feed into hell’s own reality show.