Did they silence the subject?

Oh dear God, no.

The 9 November day was a major day of celebration and recognition by the NSDAP. The NSDAP used the anniversary of the Beer Hall Putsch for its Parteitag which was a massive festival celebrating the party and its rise to victory in Germany. While the regime glossed over the putsch's more farcical elements, it was quite willing to celebrate the martyrdom of those who died in the putsch and fit it within a narrative of the party's eventual triumph in creating a new Germany. Calvin College's propaganda archive has some interesting artifacts from these celebrations such as a 1942 program and official art and medals to mark the occasion. One of the minor mysteries of the Second World War is the whereabouts or fate of the Blutfahne (blood flag). This was a Nazi ensign that was allegedly stained with the blood of those who died on 9 November. This video (with inappropriate music and a too reverent of a tone) features some of the newsreel footage of Hitler with this flag. The Blutfahne was used for special occasions and high party days in which it sanctified other ensigns and stood as a symbolic officiator over oaths.

This employment of martyrs to sanctify the party or the state is all too common in dictatorships. So long as the failure can be spun as the dictatorship snatching victory from the jaws of defeat, then setbacks as exemplified by the Beer Hall Putsch can be turned into mobilizing events by the regime. They also serve a function in the modern dictatorship by serving as a new, alternative calendar for more than a few dictatorships. The NSDAP was no exception to this trend and it was incredibly willing to tell its population that the party had once tried to seize power and had failed, but it tried again and triumphed.