I was thinking the opposite: I have no idea what Roku is, but CCC talks are often posted on HN. I guess two worlds collided somehow :)
For what it's worth, CCC organizes the "Chaos Communication Congress", which is a fairly large tech/hacker conference, with over 15,000 participants (https://events.ccc.de/congress/2019/wiki/index.php/Main_Page)
"The Chaos Computer Club (CCC) is Europe's largest association of hackers with 7700 registered members."
Also they are organizing the anual hacker chaos communication congress. All talks are available at media.ccc.de.
media.ccc.de is where the Chaos Communications Congress uploads their conference talks (they're one of the largest hacker conferences in Europe).
However, their hosting site is available for any conference to use, so it's more like YouTube for tech conferences.
I'm assuming that this organization is somehow controversial? Are they streaming pirated content or something that's politically controversial?