Describe an effective model of government you feel is not based on coercion
I don't think someone robbing you at gunpoint is the same as a government taxing citizens for necessary projects, like funding infrastructure or medical technology or NASA, etc. In the first scenario, you hand over your wallet or you get shot; definitely coercion. In the second scenario you have the complete and total ability to move outside of the US, relinquish your citizenship and never have to pay a cent to the US government again; not coercion. You have choices, you might not believe they're legitimate or effective choices, but that doesn't mean everybody else does. You also have the option not to buy property if you don't want to pay property taxes, nobody is forcing you to buy goods/services, so nobody is forcing you to pay the sales tax.. Taxation comes after your choices, not before. You don't even have to pay an income tax if you don't want to, you can't have a legitimate job, but nobody is forcing you to pay income taxes.