Somewhat effective.1. All gun owners will need to go through an education program which is applicable to the broad category of weapon they are seeking to own. This will focus on responsible use, safety, and legal responsibilities and rights. Some broad examples of the sort of programs we'd be running are;
a. Responsible use and storage of handguns, which we will get local authorities to run.
b. Effective handling and legal responsibilities of long barrel weapon ownership, which we will get local hunting clubs to run.
c. Where the heck are my WMDs?, which focuses on the safe storage of more substantial weapons, run by Colin Powell
This will merely popularize pink, soy products and other things which are currently unpopular. Before long the fashion will be to stuff the front of one's slacks with balled up paper. Its happened before (in France). It was a long time ago, just before the poorer classes rose up to kill anyone with stuffed slacks.2. In order to discourage the use of weapons as accessories, and so-called 'tacticool' fashion statements, all weapons larger than .22 calibre will be painted pink, and be kept in a fluffy holster. The sole exception to this rule is for anyone with a Barbie fetish. Their weapons will instead be painted in traditional plaid. All bullet proof armour, other kevlar products, and laser sights will have one of the following messages imprinted on them;
a. Real men drink soy
b. I need this because ducks are scary, man...
c. I feel bigger already
This would be effective, however it would lead to massive protest, a new class of criminals who watched illegal films. It might be easier to turn control of this country over to the Ayatollah Khomeini.3. All Hollywood movies will be measured to ensure there is less gun-based action, and more alternative action. This will be colloquially known as the 'Make Love not War' rule, and will apply to all shows and all forms of gun violence. Admittedly we are working out some of the kinks with this plan. A trial run recut of the X-Men suddenly generated 'The X-Rated Men', and I really would prefer not to mention what happened to Wolverine's claws. Suffice to say, this one is under review.