The Invisible Committee is the nom de plume of an anonymous author or authors who have written French works of literature based on far-left politics and communization. The identity of the Invisible Committee has been associated with the Tarnac Nine, a group of people including Julien Coupat who were arrested "on the grounds that they were to have participated in the sabotage of overhead electrical lines on France's national railways." The Invisible Committee is classified as ultra-left by the Ministry of the Interior of the second Fillon government.
https://en.wikipedia.org/wiki/The_Invisible_Committee