Here is a very important book length document by mike Adams, “The Censorship Master Plan Decoded” (“The Adams Report’), which shows how the high tech giants are moving to control on-line free speech and enforce the politically correct world view of globalist financial elite.
https://www.scribd.com/document/383918384/The-Censorship-Master-Plan-Decoded#from_embed
Although dealing mainly with the American context, primarily because this is where the big battles for the survival of the values of Western civilisation are now being played out, the document gives a good summary of issues reporters and journalists at our own site have covered over many months. The small book will thus be of use to any students of freedom and democracy. Here is a summary of the Adams Report for the time conscious:
https://www.naturalnews.com/2018-07-16-online-censorship-is-de-facto-denial-of-the-right-to-exist-in-an-interconnected-world.html