San Francisco: The American Civil Liberties Union has filed a motion to "quash or narrow" three search warrants filed by the US Department of Justice that seek to obtain details of anti-administration activist Facebook users.

The search warrants, requested by prosecutors in Washington, are part of the US government's investigation into Donald Trump's Inauguration Day demonstrations that injured police and damaged property in an area of downtown Washington.

A protester burns a Donald Trump shirt during a demonstration in downtown Washington on January 20. Credit:AP

The suit was filed on behalf of three activists who were administrators and moderators of the Facebook page DisruptJ20 which organised protests for January 20. The warrant covers their personal Facebook pages as well as DisruptJ20, now named "Resist This".

DisruptJ20, along with thousands of other organised protest groups, were prominent on the day with organiser Legba Carrefour, a self-proclaimed "rather glam anarchist", declaring that "the idea is to shut down access to the parade as much as possible".