Facebook Boots NYU Researchers Who Were Using a Browser Extension to Study Political Ads

Ad Observer was rolled out last September to make it easier to search by specific election and state

When Facebook introduced its Ad Library in May 2018, it heralded the archive of political ads and political issue content run by advertisers as a new era of transparency, making information public such as the campaign budget associated with the ad and how many people saw it, as well as their ages, locations and genders.