Facebook isn't planning on releasing the ads to the public, nor will it share further information about the details of the ads and who they were seen by. However, according to CNN, sources familiar with the issue claim they include Black Lives Matter posts, adverts promoting gun rights and posts depicting refugees as rapists. CNN also reported last week that at least one Black Lives Matter post was targeted at the cities of Baltimore and Ferguson, and that at least one campaign has attempted to incite outrage over police shootings.

In a live video address on Facebook, Mark Zuckerberg said, "It is a new challenge for internet communities to deal with nation-states attempting to subvert elections. But if that's what we must do, we are committed to rising to the occasion." In this instance, however, it seems that Facebook is largely rising to the pressure applied by Congress -- the onus will now be on Congress, not Facebook, to release the ads to the public. Facebook has pledged to change its advertising systems to give more insight into the identity of those purchasing political advertisements in the future, but given the current political landscape, some might say that's too little, too late.