If a video posted by the Boston chapter of Antifa is any indication, it’s going to be a long day for law enforcement in that city.

The group posted a relatively lame folk song on Friday, apparently titled, “Boston Belongs to Us.”

https://twitter.com/AntifaBoston/status/898636647935258624

“Boston belongs to us,” the copy cat of a Bob Dylan copy cat sings about a free speech rally scheduled for this afternoon.

“Trump supporters are a joke,” he says, “But here comes the punchline,” he adds, holding up his fist.

“Boston belongs to us, so f*ck all your free speech,” he sings, as “freeze peach” appears in text on the screen, “it’s really just hate speech.”

While it’s not clear what the group’s intentions are, evidence in Charlottesville and Berkeley indicates they’re out for blood.

That’s indicated through some of the group’s other tweets, in which they’re notifying activists about where police cameras are:

https://twitter.com/AntifaBoston/status/898649729629913089

And they’re advising agitators when to show up:

https://twitter.com/AntifaBoston/status/898625008473325568

And they warn the “pigs” may not be as “useful” to them as they were in Charlottesville, when police reportedly disbursed “white nationalist” protesters right into Antifa forces, ensuring a clash.

https://twitter.com/AntifaBoston/status/898622570253209601

Local media reports it could be a battle royale among the dregs of American society.

According to WMUR:

Thousands of protesters are expected to gather on Boston Common as two opposing demonstrations converge around noon on Saturday.

The city granted permission for an event that organizers are calling a “Free Speech Rally” but that some people fear is actually a white nationalist rally similar to the one that erupted in violence and left a woman dead in Charlottesville last weekend.

Barriers will separate participants from a planned counterprotest that its organizers are calling “Fight Supremacy” and a “Racial Justice Solidarity March.” The organizations behind this group, which could number in the tens of thousands, include Black Lives Matter and the Mass Community Action Network.

“We’ll see who really, really has the guts at this rally,” an Antifa member said.