Against the wishes of her New York Democratic constituents, Hillary Clinton voted with Senate Republicans to invade Iraq. (It was a pivotal vote. Without Democratic support, George W. Bush's request for this war of aggression would have failed.)
Humayun Khan, 27, was an army captain who got killed during that invasion.
Eight years later, the dead soldier's parents appeared at the 2016 Democratic National Convention — not to protest, but in order to endorse one of the politicians responsible for his death: Hillary Clinton.