As the public outcry following the Parkland, FL, school shooting continues to build steam, gun control advocates are finding new methods to apply pressure to both politicians and the NRA. Rather than just following the standard post-mass shooting script, Parkland students are firing back at right-wing conspiracy theorists and forcing ineffectual, NRA-sympathetic senators like Marco Rubio into an embarrassing defensive crouch. And the NRA is facing a time-honored traditional protest: the boycott.

The perks of NRA membership include discounts and benefits with a variety of companies, including car rental, air travel, insurance, and banking. Those are some of the practical incentives that keep members paying their dues to the organization. Since the mass shooting at Marjory Stoneman Douglas High School, #boycottNRA has been trending on Twitter, and users and customers have demanded that companies pull out of their partnerships with NRA. So far, it's been shockingly effective.

On Thursday, the First National Bank of Omaha, the largest privately-owned bank in the country, announced that it would no longer be offering an NRA credit card in response to "customer feedback." More companies have followed suit, including Enterprise Holdings, which owns major car rental companies like Alamo and Enterprise, with Hertz soon joining in.

Mother Jones is keeping a list of NRA business partners jumping ship, but the biggest blows so far have come from major airlines: both United and Delta announced on Twitter that they were ending deals for NRA members.

Major companies like FedEx are still offering discounts to NRA members, while Amazon, Apple, Google, and YouTube are all drawing fire for hosting the increasingly deranged NRA TV.

Of course, this could provide the NRA with more fodder. As the New York Times points out, with a ridiculously NRA-friendly president and Congress, the organization can't rely on painting itself and its members as victims of a coming liberal gun round-up. As a result, they're more and more relying on the grim, perpetually angry NRA TV personalities to find new boogeymen.

But it's hard to fund LCD screen-smashing propaganda without dues-paying members.