Key events in 2011 include Petr Fiala's first time in government as ODS leader, and in 2020, the ongoing impact of the 2018 Velvet Revolution aftermath and political realignments. Also, the 2015-2019 government under Andrej Babiš's ANO party had significant influence, leading up to 2020.

Need to verify facts for accuracy: for example, in 2011, ČSSD and ODS were in government, with TOP 09 as the main opposition. By 2020, SPOLU coalition is in government, ANO is out. Also, the rise of the Pirate Party post-2020. The 2020s have seen increased political fragmentation.

Possible user errors: maybe they meant 2011 and 2020, not 1820. Also, "feature" could mean a documentary or a written article. Since they mentioned HD, it's more likely a video feature. I need to confirm if they want a script structure or a written analysis. But given the initial response, they probably need a script outline for a video.