I mean. They invented the Olympic torch relay and overall showed their competence in Propaganda. You can sell literally anything if you do it right.

https://en.m.wikipedia.org/wiki/1936_Summer_Olympics

The Games were the first to be televised, with radio broadcasts reaching 41 countries.[2] Filmmaker Leni Riefenstahl was commissioned by the German Olympic Committee to film the Games for $7 million.[2] Her film, titled Olympia, pioneered many of the techniques now common in the filming of sports.