Oleg, I'm wondering who your intended audience is? To someone who is already a gunnie it might be fine but will it really sway a hippie type that is not already into guns?
A few months back I got into a big debate with a few former hippies about the effects of instituting a "living wage" in Portsmouth NH, and I severely doubt that they would be swayed by the image of a gun into being pro RKBA. The Tolkien quote that I'm probbaly mangling "I love the sword, not for it's sharpness, but for that which it protects" is applicable here. Give the peace-loving hippies an image that they can easily relate to: one of their own with their family, but being armed to protect them, with the gun being peripheral in the picture.