My love of Sen. Joseph McCarthy is rooted a hatred of the greatest enemy of libertarians, communism. Therefore, admiring Joseph McCarthy is very libertarian. Some of his principles were contrary, but his message of kill the reds was right in step with that philosophy.
Uh, no. Libertarians would say to communists, "We disagree with your ideology and will fight to oppose it in government, but we will fight to the death to defend your right to hold it." Libertarians would not have gone on ridiculous witch hunts under the presumption that anyone having communist sympathies is evil and must be eliminated.