The Government has quite an impressive presence on Youtube…
There are 33 different “subscriptions”; videos from such as
Library of Congress
Food and Drug
I was just watching a clip in the NASA section, of the latest astronauts who fixed the Hubble Telescope participate from space in a meeting with a Senator, for example.
The Library of Congress has an amazing selection of video available ;
in fact there is plenty to view overall.
It’s worth a look