Interpretation:
This appears to be a video from a series called Czech Parties (likely a amateur or niche European party/event video series). "1820 Years" probably means the video runtime is 18 minutes and 20 seconds , and "2011" is the release year. "Part 2" suggests it's the second part of a second volume.
If you're looking for information on political parties in the Czech Republic around 2011, here's some relevant information: