Killing Reagan (2016) on Netflix

Plot summary

Set during the final months of the 1980 presidential campaign, the story opens at a Jimmy Carter re-election rally in Nashville, Tennessee. Ronald Reagan is campaigning for the presidency, working to define himself as a leader, and William Casey serves as his campaign manager. Reagan and Carter debate in Cleveland, Ohio, on October 28, 1980. Meanwhile John Hinckley Jr., the would-be assassin, drifts without purpose; he buys a Röhm gun, and when he hears about the assassination of John Lennon, he becomes fascinated by Mark David Chapman.