Those four arrived, saw the strength of the anti-fascist forces that were already in place as counter-protests assembled, and decided that this was not the day for a putsch. They went home again.
The city's police chief was furious. All leave had been cancelled to mount a million-dollar operation, on the same scale as the security cordon during the Nato summit. It was a huge triumph for DC United to Stop the Nazis, the group that led demonstrations against the march, but also raised some issues about the Nazis in question.
The ANP claims a membership of perhaps 10,000; independent research groups put its active core at about 150.
Its putative fuhrer, who has described himself as "absolute, supreme dictator", is David Wolfgang Hawke, 20, a student in South Carolina. Mr Hawke is better known to his parents as Andrew Greenbaum: his family are Jewish.
The DC Police chief, Charles Ramsey, wants to sue Mr Hawke/Greenbaum and his followers. "I don't care if they have no money," he said. "We still should sue them. I'll take their gym shoes."
He might do better to take their modems: the group has made its name on the Internet.Perhaps, in the future, it might stick to virtual marches.