The questions about the legality of income taxes has been answered many, many times. The answers might not satisfy some, or most of the people, but it is pure foolishness to screw your whole life up with an issue that you simply cannot win.
It looks to me like these people have lost their case and they have to pay the price. Eventually they are going to end up either giving up, or worse. You've got to know when you're beat and move on. They can be martyrs if they want, but it will change nothing. Futility is not a pretty thing.