Because they will kill you if you don't.
After Waco, I understand that there are Democrats who want to kill you if you disagree with them. I also understand that there are psychopaths at the head of the Democrat party. I still think that we should oppose them. A government is not legitimate if it cannot protect its’ citizens and their property. These thieves are making money without paying income tax. They are also using a property-tax-paying landowner’s property without paying property tax. Of what use is the government then? Those who aren’t paying taxes are stealing from those who do pay taxes and the government is unwilling to stop the thievery. This is the government who receives tax money from the victims of this thievery. There’s a law suit in this. The social contract is being broken by the government. Aiding and abetting criminals is still illegal even if government employees do it.