Heh... when you take a look it's not first time in history that "tax collectors" are armed. When some country invade other and and impose taxes to the defeated side his "tax collectors" usually are armed, with full armors... some conspiracy theorist can claim that they look as regular soldiers. :D And they act just like IRS demand from his agents. Forcefully take money from people, at any cost. Retribute with full force if someone don't obey. This is really serious. IRS have first and last word. You can sue them, and most likely win on court ( IRS lose big majority of cases ), but such game is very, very expensive and time consuming sport. Majority of people simply don't have money to sue them. Such big armed force backed by all other government armed enforcers can be effective weapon against citizens. So you will obey or IRS will fuck your life, if you rebel, they will lawfully kill you. Really Afro'murica aren't even 3rd world... this become one of worst shithole in the world.