I'm glad that you see income taxes and property taxes as immoral, because they are, however excise and sales taxes are too. If I, as a business owner or perhaps someone who owns a private dock, do not wish to enforce a tax on my customers, I will be threatened and possibly arrested or murdered if I resist arrest.
I am not against self-defense either. What I'm referring to when I talk about kidnapping and murder is when someone disagrees with being taxed(having someone steal from you), you will be arrested(kidnapped) and if you resist being kidnapped, you will potentially be murdered.
Why I argue this is that the whole basis of government throughout history has depended on this system of theft backed up with the threat of murder. It cannot exist without theft and murder. Thus, one could argue, that the government depending on such immoral actions, is an immoral institute in itself.