Amplification across the nation
Also, you can find 1939's Mr. Smith Goes To Washington entirely on the internets (I find Kickass Torrents to be the best & safest source), and there was even an original Spanish-language dub of it from Argentina called "Knight Without A Sword" (Caballero sin Espada) which is at least in part up on Youtube.
Yes, it's Capra, and thus cloying. It's also still really relevant - particularly the bits about Claude Raines' chara. (And, with the original trailer on IMDb, you can see another demonstration of how much more sexist Hollywood has become - Jean Arthur got top billing back then, just like Olivia de Havilland did in Captain Blood's PR. Leading ladies were considered selling points, and for more than their T&A.)
Along that line, to explain the question so many of my readers from abroad have asked - why is it so difficult to pass beneficial reforms in this country? - I will answer with a joke that I saw a while back on a blog; unfortunately I'm not sure where or who first posted it. The joke goes that Sen. Al Franken, the former comedian from Saturday Night Live who once told war criminal Kissinger to take a hike when the latter was trying to scrounge up tickets to the studio show, upon being finally seated after all the challenges mounted by his Republican rival Coleman were thrown out by the courts, was very nervous and self-conscious about making protocol mistakes. So of course he makes one, saying "The floor recognizes the senator from Anthem Blue Cross" - at which Freudian slip, thirty senators rise to their feet!
It wouldn't be funny if it weren't all-too-true - which makes it not funny at all, really.