If any of your tax money goes for something that you don't know about,
or if it goes for something you don't want,
or if you are forced,
it's stealing.

If you agree with taxation, you are not being taxed. It is simply a blind donation, since you don't really know what it is being used for.

But, if you agree with taxation, you agree that people who don't agree with taxation, should have their money stolen from them. You are part of the robbery group.