Even if many people felt they could actively do something about it, they are in direct opposition to all of the people who mindlessly undermine their country by

Even if many people felt they could actively do something about it, they are in direct opposition to all of the people who mindlessly undermine their country by spouting rhetoric like "well, we have to give up some privacy if we want to be safe" and have convinced themselves that the government has done nothing against any American and are only interested in "bad guys" (despite the countless documented cases of the government spying on girlfriends, attractive strangers, blackmailing politicians, activists, etc). There are so many hurdles, well beyond apathy. If there were real meaningful action anyone could take, they would also face the threat of a government that attacks those who criticize it. If that weren't an issue, you would still have to contend not with the apathetic, but with those who enthusiastically accept and promote what is being done in some bizarre sense of self-preservation from a big scary world, because they're deathly afraid that some evil underwear bomber is going to blow them up next time they're on vacation to grandma's house.