...robbery is a crime
...plain old theft is a crime
...embezzlment is a crime
The thing they all have in commone is that they are crimes.
I have always considered taxes to be any time the govt figures out a new way to rob, steal or embezzle money out of their citizens. So, to my little pin headed way of thinking income tax, sales tax, tariffs, fees, fines are all taxes. I like to keep things simple. Keeps me from tossing and turning at night worrying about who we should hang first.

Liberals are like a "Slinky". Totally useless, but somehow ya can't help but smile when you see one tumble down a flight of stairs!