The full list of incidents is here: https://www.reuters.com/article/us-usa-election-capitol-history-factbox/factbox-bombings-shootings-beatings-u-s-capitols-his

The full list of incidents is here: https://www.reuters.com/article/us-usa-election-capitol-history-factbox/factbox-bombings-shootings-beatings-u-s-capitols-history-of-violence-idUSKBN29D03F https://www.reuters.com/article/us-usa-election-capitol-hist... But while all of those are incidents, attacks, etc., I think the distinction (which I failed to highlight) is that 1814 and 2021 involved a complete overrun of the building rather than a localized incident or intrusion. Doesn't make much of a practical difference in the end, though.