Impending National Distraction, aka Public Relations 101
medium.com
medium.com
People hate unhappy, depressing or otherwise hopeless situations and will seek out the easiest outlet to escape. I think it's a survival mechanism of sorts where you're more focused on being happy and alive vs. disillusioned and not procreating.
We're genetically ill-equipped for righteous indignation by and large so X-Idol-Housewives-Celebrity-Factor-Dance will do nicely in a time of genuine crisis.
What you observe might be a real phenomenon – the 'normals' are barely aware of the NSA stories so far. But something so carefully curated by a for-profit entity as the Facebook feed (or similarly, the national TV networks' nightly half-hour news) is not going to give a representative sampling of people's concerns.
Edit: Closed parentheses.