content: Cambridge Analytica collected a bunch of demographic information through various apps and "quizzes" and such, and some of that information was sold to conservative politicians for use during the 2016 election (and since they paid for it, the politicians are in the clear as far as campaign laws). Meanwhile, the Obama campaign had nearly unlimited administrative access to all of Facebook's demographic information, relationship graphs, etc., which they were given for free (in violation of campaign laws) because they were "on the same side." They're sweeping the Obama-era stuff under the rug because "same team", while the much less invasive Cambridge Analytica data mining is being touted as a "serious invasion of privacy" and a "major scandal" because it helped conservatives. tl;dr - No abuse or invasion of privacy is ever a problem until conservatives are accused of it. Then it's suddenly a huge problem that needs to be dealt with immediately. Because reasons.