On his first day back in office, the president pardoned or commuted the sentences of those convicted over their roles in the January 6, 2021, riot.

Four years after they raided the Capitol and assaulted police officers, a group of some of the most violent Jan. 6 rioters are now free men.

The return of battle-hardened leaders ... will further radicalize and fuel recruitment platforms,” said Jacob Ware, a Council on Foreign Relations research fellow.