A researcher and activist led an effort to archive more than 99% of content posted on Parler, including the location data of users who stormed the Capitol on Jan. 6, to hold them accountable for the violence.

The public posts archived by the researcher, who goes by donk_enby on Twitter, has already been used by technology news site Gizmodo to pinpoint the locations of Parler users who attended the Jan. 6 “Save America” protest that ended in a riot at the Capitol. It appears that hundreds of Parler users participated in the protest, and more than a dozen breached the Capitol building during the riot.