Updated 1/15/2021 4:14 PM ProPublica is a Pulitzer Prize-winning investigative newsroom. Sign up for The Big Story newsletter to receive stories like this one in your inbox. In 2009, Kevin Greeson traveled from Alabama to witness the inauguration of President Barack Obama, at the time one of his political heroes. Twelve years later, a stone's throw from where Obama had been sworn in, Greeson died of a heart attack while demonstrating in support of President Donald Trump during the Jan. 6 siege of the Capitol. Greeson had undergone a stark political transformation in those intervening years. A longtime Democrat who once championed unions and supported progressive politicians, Greeson had become a staunch Trump supporter by the time he died outside the Capitol at the age of 55.