America already has a progressive income tax and it would be made worse by the Bernie Sanders plan your friends who believe everything they read on a Facebook meme have been sharing. How worse? To the tune of $18 trillion dollars.

But how to describe just how bad a progressive income tax is now? How about with a cartoon...

This is the progressive income tax system all U.S. taxpayers live under, and I don't see we should be any different. In fact, I believe all future improvements should be paid in this way."

"Works for me," said Dick. So, by a vote of two to one, the cost of the street improvements was divided as Tom had proposed, even though they benefited equally, and even though the reason Harry had more money was that he and his wife had worked many more hours than his brothers and their wives, and saved some of what they had earned instead of spending it all.

Tom and Dick lived happily ever after with their new arrangement. Harry grumbled a lot, but whenever he complained his brothers called him greedy and selfish.

Remember this when your friend on Facebook who doesn't understand the economy, or politics, or how to walk and pat his head at the same time, shares the newest Bernie Sanders meme.