Oleg, I'm glad to see my quote on "making liberal less of a dirty word" caught your attention.
I myself am a liberal and dispise when people use the term to describe anti gunners. Some of the most pro gun people i know are liberals. We are not the americanized version of the term, but REAL liberals.
I like athoritarians, because athoritarians are, by their nature, anti-gun. They seek to ban anything that would pose a threat to their athority. It describes both liberal and conservative anti-gunners.
Left-Wing doesn't work because it's a dated term that is too close to liberal, and not all american liberals, even those who describe themselves as liberal Democrats are left wing. Many of them are, in fact conservative athoritarians.
Socialist doesn't work either because gun ownership has nothing to do with REAL socialism. In a real socialist or communist system, gun ownership would be perfectly fine. Unfortunately, the only socialist or communist governments we see in this world are bastardized.
Don't group all anti gunners as of one group (unless that group is: anti gunners) unless you want to alienate that group.
It nicely describes the various members of the pantheon of statists, collectivists, and other varieties of control freaks that have a burning desire to tell me what to do and take my stuff, like Bill Clinton or George W. Bush. 