One only needs look at the size of the NRA building...

...to understand a lot about why they need to keep promoting gun sales. It's a huge building, and must be very expensive to run. Who the hell is in there? What do they do? Why does it take so many people to manage an association of like-minded people?

MONEY. The NRA needs to keep the money flowing in from dues and fees, and those dues and fees are based upon keeping as many guns in the hands of as many people as possible. Any support for gun control means supporting a decrease in their own revenue. That's all they care about.

We need to make it difficult for them to pay the rent on that giant building via social pressure. Making our gun culture as unpopular as our former smoking culture or acceptance of getting behind the wheel drunk.

This is America, and the only thing we worship more than guns is money. They'll listen when they know that being ostracized will cost them more than accepting some reasonable restrictions on their product.