For your consideration, nothing more.

[beardown]

7. I've used the MADD campaign as a example

Without banning cars, without banning booze (coincidentally the 18th amendment considerably ramped up gun violence), the campaign against drunk driving has greatly reduced drunk driving and changed attitudes. As noted by an earlier reply, there were certainly excesses and yet another large step in the erosion of Constitutional rights, but there were no outright national confiscations of all booze or all cars. Heck, I wouldn't mind a similar campaign, albeit with significantly more respect for Constitutional protections, against texting and driving, but texting and killing isn't frowned on by white middle class moms the same way that they frowned on drunk guys driving.

However, with the current crippling lack of trust between the two sides and the aforementioned weakening of Constitutional rights prompted by the MADD campaign and the ever broadening definition of 'drunk driver', it will be an extremely difficult campaign to replicate for gun violence abatement.