The term "cancelled" is quite common in American culture nowadays. It no longer refers to things like a TV series that has run its course or a meeting that is not going to take place--it's frequently used to describe a person of influence or an organization that has been publicly called out and outcast for (perceived) wrongdoing. It could be as simple as one bad tweet or comment, either past or present, but the effects can be catastrophic. Celebrities can all but lose their careers, and companies can suffer extreme economic impacts. The phenomenon of being "cancelled" is not necessarily a new one (think: McCarthyism from the 1950's), but it has certainly become a widespread and accelerated experience largely thanks to social media.