Kooks left and right

This morning I described myself to a new acquaintance as a politician. I could have said blogger, since the pay is about the same, but I used politician, an uncomfortable word choice for me. The guy looked at me, and realized he did not recognize me (unsurprisingly). Without much pause, he asked, left or right?
It seems thats how people perceive the world of politics (maybe thats our problem?). So I gave the standard libertarian reply: "we don't fit that description." I then proceeded to run down a list of leftish things that I support: choice in abortion, gay marriage, anti-war in Afghanistan, Libya, etc., then I switched to rightish things: gun rights, diminished role of government, low taxes etc. Of course he had never heard of us. "New," he asked? I smiled.
The reason I bring this up is the incident in Norway, 76 dead at the hands of an "extreme right-wing" terrorist. Personally I think he is nuts, but maybe thats too generous. There  have also been left-wing terrorists that have committed murder on a large scale, although they have had a political agenda and they seem to have disappeared of late. The Norwegian nut-case had an agenda, yes, but to say it was confused is somehow disrespectful of the 76 victims. My point is, right or left, like the cartoon above, are just different words that have the same meaning in libertarian parlance: no choice.