For those who are able to: please try to scrape and save any videos and livestreams of the Capitol storming and occupation. Just like after Charlottesville in 2017, many of those who are streaming will delete their streams once they realize how incriminating the footage is.

Check out our (clunky and incomplete) archiving effort from the Charlottesville event here for an idea of the type of materials to retain: https://www.bellingcat.com/news/americas/2017/08/29/database-august-12-charlottesville-videos/

For most every platform, there are sites that can do a basic scrape of a video, including livestreams. Just Google "download [platform] video" and you'll find a site that can do it, though you may have to fight through a lot of ugly ads.
Use Google Drive/Dropbox to save them.

Search on different video platforms -- YouTube, Periscope, Facebook, Instagram -- with search parameters of the last one / twelve hours. About half of the videos we found from Charlottesville protesters who were livestreaming were deleted within ~48 hours. A very short lifespan!

There will surely be an effort - maybe we'll try it, maybe someone else, maybe lots of places - to gather as much video and photographic evidence as possible. No clue how this will look, but for now: grab and save all you can until the mega-crowdsourcing effort begins.

For efforts already underway, see here: https://twitter.com/Kysarcius/status/1346928520874893314

Facebook is removing visual evidence of the Capitol storming.

Please download any photographs and videos you can find on Facebook that are not retained on other platforms! https://twitter.com/sarahfrier/status/1346972417814458369?s=20