A majority of viral caravan coverage on Facebook and YouTube came from right-leaning sources, which frequently pushed anti-immigrant disinformation. Since Central American migrants fleeing poverty and violence slowly began making their way toward the U.S. southern border in a series of caravans, right-wing sources have dominated viral caravan content and coverage on Facebook and YouTube. A Media Matters study of Facebook and YouTube between October 13 and November 19 found that a majority of the caravan content with the most interactions came from right-leaning sources. Among all sources analyzed in this study, Fox News had the most top-engaged Facebook links and page posts as well as the most caravan-related YouTube videos with over 100,000 views. On air, the cable network dedicated over 23 hours to caravan coverage in the first two weeks after the first caravan set off on October 13, and its reports often spread anti-immigrant disinformation and conspiracy theories.
Similarly, viral right-leaning caravan coverage on Facebook was riddled with anti-immigrant false news. On YouTube — where far-right misinformation thrives — some of the right-leaning channels dominating caravan-related video content were news aggregators run by sources that we could not verify, and others featured “alt-right” and far-right personalities. Sixty-four percent of the Facebook page posts about the migrant caravan with the most interactions came from right-leaning Facebook pages. Of the 267 caravan-related Facebook posts with the most interactions, 171 were posted by right-leaning pages. Fifty-one of these posts came from Facebook pages without any political alignment (19.1 percent) and 45 came from left-leaning pages (16.9 percent).
— Media Matters (@mmfa) November 27, 2018