Deplatforming, also known as no-platforming, has been defined as an "attempt to boycott a group or individual through removing the platforms (such as speaking venues or websites) used to share information or ideas", or "the action or practice of preventing someone holding views regarded as unacceptable or offensive from contributing to a forum or debate, especially by blocking them on a particular website."

https://en.wikipedia.org/wiki/Deplatforming

Its origins lie in the Inquisition, also known as the Spanish Inquisition, where those whose ideas were heterodox were removed from the public gaze. In the 20th Century it was, most famously, exemplified by the 1930s German practice of burning the writings of those with impure thoughts.