That study is simply asinine. If you believe violent action is NEVER justified, you are a complete moron or totally immoral. All that study shows me is that there are more conscientious objectors amongst the left (which should surprise no one), or more historically ill informed people amongst the left. This experiment we have with a constitutional democracy is not all that long running, when compared to historical governments. There is little certainty that one day, violent action will be more than justified. Anyone who says it is now, is pain stupid, but no one can predict the grizzly future, 40 years from now, or even 5…
BTW I do not own a gun, I am a cube dwelling engineer, who tends to be a bit of a social liberal, but I for one am glad the gun nuts exist.