Facebook changed its mind and belatedly pulled a racist Trump campaign ad

I mean, it's not like Facebook could have known the Trump campaign ad was a transparently racist attempt to gin up anti-immigration sentiment just days before the midterms. Right?
After first approving the ad, which depicted a convicted murderer and falsely linked him to a group of migrants fleeing violence in Central America, for paid promotion, the Palo Alto-based social media company thought better of it Monday and decided that the race-baiting spot didn't actually meet its high standards.&nb