The Joint Declaration was agreed upon at an informal meeting of the European Chiefs of Police in London hosted by the National Crime Agency on 18 April.
Police Chiefs of all EU Member States and Schengen Associated Countries were invited, alongside Europol’s Executive Director.
Here is the declaration (pdf).
Also the judgement and laws could change. Potentially rendering everything you do now illegal. Therefore it could be used for prosecuting you later for something you did while it was perfectly legal.