Facebook slaps a fact-check on MRC Free Speech America's Catherine Salgado for post criticizing COVID-19 mask mandates: Facebook slapped a fact-check on an article posted by MRC Free Speech America staff writer Catherine Salgado that claimed COVID-19 "Mask Mandates INCREASED Covid-19 Deaths" published on her Substack account. The article that triggered the Facebook censors was based on an observational study published in Medicine in February 2022 authored by German doctor Zacharias Fögen. The study summarized that the "most important finding" was "that contrary to the accepted thought that fewer people are dying because infection rates are reduced by masks, this was not the case." Facebook notified Salgado that it had placed "a notice to your post" with a fact-check by Facebook partner Health Feedback. Facebook claimed that "Independent fact-checkers reviewed the information and said it was false." Posts that have been fact-checked lose exposure on Facebook as they are negatively affected by the platform's algorithm.