In this context, "out of" has a similar meaning to making something "from" something else. He made Fox and right-wing radio into enemies, but they weren't his enemies before. Another way of saying "Well, we all know he made enemies that night. out of Fox and right-wing radio." is "Well, we all know he made Fox and right-wing radio his enemies." I help this helps you! Sorry, this is my first question to answer!