I tend to work at the grass roots level. Family, Friends, Neighbors.
I can't say that any of these folks would be activist anti-gun folks, but they probably would have fallen prey to the lies in the media and from our President.
My approach. Take them shooting. Pay for the ammo, supply the guns.
Be sure and start each session with a safety talk (I almost always take them outside, either on my range, or before that on public lands).
I have them help me declare the firing line, the target zone and backstop.
Each new shooter must have an experienced shooter at the new shooters shoulder. ....
Every shooter get's hearing protection.
I like to start with 22's and have them work up to the .223 or 7.62x39 in my favorite configurations.
The more that they feel involved with the process, the more they seem to embrace it.
Loading Mags, Inserting Mags, firing, and one they all love, Learning how to show themselves and me, that they are unloaded. All pop cans and paper targets are picked up after the shoot.
Each new shooter will leave knowing that WE ALL CARE WHERE THE MUZZLE IS POINTED at all time, and that the firearms are always treated as if they are loaded.
Once the mystery is removed, and they feel that they have a part, attitudes change.