After a tumultuous 2020, the U.S. Department of Justice may have anticipated a calmer 2021. Then, six days into the new year, a pro-Trump mob stormed the U.S. Capitol building, setting off one of the largest investigations in the department's history.

The Jan. 6 riot occupied much of DOJ's attention in 2021, but new leadership under the Biden administration also put a renewed spotlight on antitrust and voting rights challenges.