Why is property tax unethical?

In the most basic form it's double taxation. Meaning you payed taxes on it when you purchased it then just to keep it you have to pay tax again and again. More so, as in my state (WV) it is referred to as a personal property tax, therefore you can pay for a house, and its' sales tax, pay interest to the bank for years, pay it off, then it's still not 100% yours because if you don't continue to pay for you personal property tax they (the state) will take your house from you. That makes it unethical.