目前这三个协定都已经生效 平台越开放，前路越宽广Carolyn Wysinger, an activist who provided Facebook feedback and guidance about minority users' experience on the platform, told CBSN Originals that implicit bias is a problem that permeates content moderation decisions at most social media platforms. □冯海宁（媒体人） 编辑：井彩霞校对：李项玲Nonetheless, a recent Pew Research Center survey found that nearly three-quarters of U.S. adults believe social media sites intentionally censor political viewpoints. In the last two years, two congressional hearings have focused on the question of tech censorship. }Democratic vice presidential candidate Kamala Harris tweeted a photo of her and Boseman, saying she is "heartbroken." Boseman's last tweet before his death was a photo of himself and Harris, encouraging people to vote.