The "ends justify the means" mentality is antithetical to libertarianism.
Libertarianism is a moral philosophy built on the Non-Aggression Principle.
You are either acting in accordance with non-aggression, or you are not, there is no in between.
Check out the Laissez-Faire Journal at LFJournal.com
"The State is a gang of thieves writ large." - Murray Rothbard