Shadow-Banning Is Just The Tip Of The Iceberg: We're All Digital Ghosts Now
https://www.zerohedge.com/news/2018-10-27/shadow-banning-just-tip-iceberg-were-all-digital-ghosts-now
Just about the only bulwark against being silenced by the modern-day tech-corporate-NKVD-Stasi is Patreon.
If you do a search of shadow banning, you'll find sites that claim to help you identify whether Twitter or Instagram has shadow banned your account. The basic idea of shadow banning is to spoof the shadow-banned user into believing their public posts are visible to all while in reality the posts are visible only to the user or in some cases to the users' followers.
Wikipedia's definition of shadow banning is:
"Shadow banning (also called stealth banning, ghost banning or comment ghosting) is the act of blocking or partially blocking a user or their content from an online community such that it will not be readily apparent to the user that they have been banned."
Here is whatis.com's description: "Shadow banning is controversial because it allows an administrator or moderator to effectively become a censor and prevent specific users from interacting with other members of an online community on an equal basis."
Shadow banning and outright banning are only the tip of the iceberg: everyone who posts content on the web or social media is subject to much more subtle and completely opaque controls on how much of your digital presence has been ghosted–not just in social media communities but in searches and how links to your site/content and re-posts of your content are handled by the tech cartel that controls what's visible and "found" on the web and social media.