Astroturfing is when corporations or organization[s] try to make it seem as though whatever they are selling is part of a grassroots movement. For example when a seeming small group calling themselves Americans Against Food Taxes run a national ad campaign against a potential beverage tax. It's not paid for by a small grassroots movement of concerned citizens, but a large beverage conglomerate lobbying against a soda tax. According to [John] Oliver, in the wake of U.S. Supreme Court decisions like Citizens United, astroturfing is becoming increasing common. Like a national wetlands organization funded by real estate developers and oil companies and a seeming restaurant worker group campaigning against minimum wage increase. It's pure straight up opposite world," said Oliver. Some astroturfing experts work with many special interest groups, creating nonprofit shell companies of sorts to ensure that their ties to the fake grassroots campaigns can be kept secret. One of "the most infuriating tools" of astroturfing is the use of paid protestors. These paid protestors show up at places like town hall meetings masquerading as concerned citizens and reciting lines fed to them by special interest groups. The existence of these paid protestors is now a common theme on conspiracy message boards. "That is hugely dangerous," said Oliver.