TikTok has been running a questionable word-filtering system in Germany, according to a report by German public broadcasters. The popular Chinese-owned social network has been blocking posts that contain German-language words relating to Nazis, LGBTQ culture and the tennis player Peng Shuai, according to research by [NDR, WDR and ARD’s Tagesschau.](javascript:void(0)) Users were able to post the offending keywords, but — in a practice known as shadowbanning — the posts were not visible to others. Words such as “porn” and “sex” were blocked, presumably to protect minors. However, words such as “gay,” “queer,” “LGBTQ” and “homosexual” were also blocked. Other...