Nearly a month after a pro-Trump mob violently stormed the U.S. Capitol, a clearer picture is emerging of the individuals and groups involved as federal authorities arrest and charge people who allegedly participated in the riot.

Former President Donald Trump’s supporters -- 74 million of whom voted to give him a second term in 2020 -- are diverse in background and ideology and come from all corners of the United States, and those who stormed the Capitol represent just a fraction.

But to some experts, the hundreds who took part in the Capitol siege represent some of the most fervent and radical adherents of the “Make America Great Again” movement and others caught up in the frenzy of the day. They say attempts to unite those extremist elements fell apart after Charlottesville but gained renewed momentum in 2020, with racial unrest, the pandemic and most recently the unfounded controversy over the election.