Several state-run media outlets in China have slammed social media users for glibly citing sensitive historical events to express their adoration for celebrities.

People’s Daily, Global Times, and China Youth Daily were among those that wrote sharply worded posts on their respective Weibo microblogs on Friday, discouraging people from “ridiculing” historical events regarded as national tragedies. A recent internet trend has seen netizens penning online love letters to superstars that include allusions to the Cultural Revolution and other touchy periods from the past.

China Youth Daily shared screenshots of social media posts in which one netizen purportedly wrote to a celebrity, “You are my Treaty of Nanjing, you are the beginning of my downfall” — a reference to the 19th-century agreement that saw Hong Kong ceded from China to Britain.

Global Times said that internet posts “making light of national humiliations” are “proof of stupidity” among netizens. On Thursday, Weibo announced that it is clamping down on such content, adding that posts using the phrase “Treaty of Nanjing” would be barred from the microblogging platform for the next three days. (Image: @中国历史研究院 on Weibo)