Why is it alright to have socialized defense against external threats (like terrorists and murderers) in the form of police and armed forces, but not alright to have socialized defense against internal threats (like bad organs and microorganisms) in the form of a single payer universal health care? Surely both threats are serious and both threats need to be responded to, proportionate to their severity. And microbes and malfunctioning organs kill and maim far more citizens than human beings. What is the difference between the argument “I don’t want my taxes to pay for that bum’s treatment” and “I don’t want my taxes to wage wars of choice”?