Supporters of US President Donald Trump enter the US Capitol's Rotunda on January 6, 2021, in Washington, DC. - Demonstrators breached security and entered the Capitol as Congress debated the a 2020 presidential election Electoral Vote Certification. SAUL LOEB/AFP via Getty Images Almost 20% of rioters charged in the Capitol siege were active duty military members, or veterans. The report published by NPR follows a broader conversation about extremism within the US military. Insider created a searchable database of those individuals charged for their participation in the riot. Visit Business Insider's homepage for more stories. As members of the violent mob who stormed the US Capitol have slowly been identified and charged, a new report offers insights into the background and training of dozens of those rioters.According to NPR, nearly 20% of the individuals facing federal charges or District of Columbia charges for participating in the January 6 insurrection are military veterans.