History of Downfall parodies

Origins
The Downfall parody meme, the parodying of the movie Der Untergang, originated in YouTube on August 30, 2006 with the upload of the earliest known Downfall parody, "Sim Heil: Der Untersim" by DReaperF4. The original video was a spanish subtitled parody of Hitler ranting about the release of the demo of Microsoft's Flight Simulator X. An English version was made but was taken down in 2009 by a copyright claim by Constantin Films AG.

Eventually the popularity of the meme spread and hundreds of new Downfall videos were uploaded as a result.

April 2010 Constantin Copyright Claims & Takedown of Parodies
In early April of 2010, using YouTube's ContentID, Constantin Films began removing Der Untergang parodies from YouTube. The production company disapproved of the parodies and decided to take down the Downfall videos. As a result of the takedowns, parodists uploaded new Hitler rants videos about Constantin's blocking of parodies.

July 2010 DMCA Takedowns
On July 28th, 2010 few months after the April 2010 takedowns, Constantin film continued its taking down of videos. Several Untergangers (Downfall parodists), had their videos blocked and others recieved strikes on their accounts. As a result, some Untergangers deleted every remaining parody in their channel to prevent their YouTube channels from being suspended. One Unterganger's channel (MrTNeumann), was terminated because of copyright claims. Because of these events related to the takedowns, parodists that frequently uploaded videos made back up channels.

Constantin Ends The Blocking Of Videos
On October 2010, Constantin, instead of blocking videos, placed adverts on parodies instead. Downfall videos that were previously blocked, were back on YouTube. Many of these blocked videos were unflipped classic "Hitler finds out scene" videos. Previously blocked parodies such as "Hitler Gets Banned From Xbox Live" were unblocked, but videos that parodists deleted because of the copyright takedowns were gone.