A man knocks on your door.

His speech is rambling and difficult to follow, but you hear him say that he has been robbed. 

He says some strange things about your neighbors eating dogs and cats, and about there being an invasion of the country. He talks about Hannibal Lecter. He talks about sharks. He says that he has been chosen by God. He says that he is the only one who can put things straight.

"I need a gun," he says, "so I can fix things. I'm going to punish the people who robbed me. There are enemies within this town. They're vermin, and I'm going to get rid of them. I am your retribution!"

Then, he laughs, and says he was just kidding. It was just a joke, he says.

Then, he asks you again to give him a gun.

Would you give this man a gun?

Donald Trump has said all these things, and more. He has promised to persecute anyone who stands in his way. He has threatened to turn the US military into a weapon against the American people in order to punish his political enemies. He has pledged to put tens of millions of people in concentration camps. He has said that he will terminate the Constitution and its freedoms. He has said that he will be a dictator, and that he will send police out on a rampage of bloody violence so that no one ever defies him again.

Donald Trump's supporters say that he doesn't really mean it. They say he's only joking.

The American Presidency is a deadly weapon. It has entire armies at its command. It wields attack drones running on artificial intelligence to fire explosive missiles at its targets from a distance. The American President controls an arsenal of nuclear weapons.

If Donald Trump came to your door, ranting and raving about being persecuted, telling you about his plans to take revenge on his enemies, would you put a gun in his hand?

Today is Election Day. 

You know the right thing to do.