A few days ago, ProPublica, an independent, nonprofit newsroom, discovered that a tool it was using to track political advertising on Facebook had been quietly disabled — by Facebook. The browser extension had detected political ad campaigns and gathered details on the ads’ target audiences. Facebook also tracks political ad campaigns, but sometimes it fails to detect them. For the past year, the company had accepted corrections from ProPublica — until one day it decided it didn’t want them anymore. It also seems like “they don’t wish for there to be information about the targeting of political advertising,” an editor at ProPublica told me.
