https://www.reuters.com/article/us-facebook-protests-allhands/after-facebook-staff-walkout-zuckerberg-defends-no-action-on-trump-posts-idUSKBN2392T5 >Facebook CEO Mark Zuckerberg told employees on Tuesday that he stood by his decision not to challenge inflammatory posts by U.S. President Donald Trump, refusing to give ground a day after staff members staged a rare public protest.