The Natural Right to Collect Taxes

Some people might tell you taxation violates their "rights" to life and property, but when tax-funded public servants entrusted with upholding the public health and welfare are attacked by malcontents claiming to defend their "rights" to life and property, the tax-funded public servants fight back. Why do they fight back, if there's no right to collect taxes and securing the permission of public servants for tax-exemption is not required?