On 7 May 2019 Spoleczna Inicjatywa Narkopolityki (Civil Society Drug Policy Initiative, “SIN”), supported by the Panoptykon Foundation, filed a lawsuit against Facebook in a strategic litigation aimed at fighting private censorship on the Internet. Online platforms act as the ‘gatekeepers’ to online expression, thus gaining tremendous power over the information circulated on the Internet – power which they wield without an adequate accountability or responsibility. Moderation is necessary to fight illegal, harmful content but unfortunately perfectly legal and socially valuable materials often fall prey to it.  We hope that our lawsuit against Facebook will help change this.