An Oklahoma grandmother. The CEO of a Chicago-area marketing firm. A Florida man convicted of attempted murder. A leader of the group of far-right street brawlers known as the Proud Boys. An Iraq war veteran who works at a Seattle-area packaging plant. A newly sworn-in West Virginia lawmaker.

Hailing from across the country and comprising a variety of backgrounds, many who rampaged through the U.S. Capitol Wednesday had one thing in common: an unfounded certainty that President Trump had won re-election. In the days since the attack—resulting in five deaths, including a police officer who was killed and a rioter shot by police—a clearer picture of the angry mob has begun to emerge.

Some had expressed their anger openly on social media. Some had been in trouble before, with backgrounds including arrests, financial problems and affiliations with extremist groups, according to public records and online posts. Some led unassuming lives, with dumbfounded family members saying they had no idea how their loved ones got swept up in the chaos inside the Capitol.

Read more: Wall Street Journal