BBC News
By Anthony Zurcher
image copyrightBBC/Getty Images
A US president is banned from social media. A long-time national science reporter resigns in disgrace after repeating a racial slur. A school district drops the names of famous Americans from its buildings. A congresswoman is punished for spreading conspiracy theories.
Each one of these episodes has been cited as evidence of "cancel culture" - the idea that zealous activists, mostly on the left, are seeking to suppress disfavoured free expression by permanently shaming and ostracising individuals who have been deemed to have transgressed.
Just last week, Donald Trump's legal team derided his impeachment trial as "constitutional cancel culture". Disney severed ties with actress Gina Carano, who portrays a popular character in its Star Wars series The Mandalorian, reportedly because of inflammatory social media posts on mask-wearing and the US election.