https://www.siliconvalley.com/2019/10/10/trump-facebook-ads-biden-impeachment/ > A controversial new ad from President Trump’s reelection campaign is the latest example of how Facebook has become the Wild West of political advertising. > The tech giant is refusing to take down a Trump ad that includes claims multiple fact-checkers have declared false and at least one major cable channel declined to run — sparking a debate over online misinformation and freedom of speech.