Looks like a group of shady men wearing masks intended to hide their faces around an unmarked van threatening civilians with weapons to me. Call the police, maybe hyperbolize it a bit. Make them either abandon their spot or waste their time justifying their existence to the police instead of whatever bullshit they're there to do.
Are you sure it's not a group of protestors? Because then covering your face is illegal in some places now. Better call the cops to get those protestors back to the free speech zone.
BUT THIS IS STILL A TOTALLY NORMAL AND FINE DEMOCRACY, RIGHT CONSERVATIVES?