The Zeitgeist Movement (TZM) is an activist movement born in year 2008 in the USA, and well known worldwide. It is famous for to have produced a series of documentaries that show the downsides and structural problems of capitalism, especially of the monetary system. It promotes activities all around the world.
Their site:
https://www.thezeitgeistmovement.com
Youtube Channel:
https://www.youtube.com/user/TZMOfficialChannel
Wikipedia:
https://en.wikipedia.org/wiki/The_Zeitgeist_Movement
Especially their first documentary “Zeitgeist – The movie” worth to be watched, as it explain well how the monetary system, with its system of interests, inflation and infinite debit, works: