Easy Upload and Safe Storage of videos and photos of police brutality, evidence of infiltration?

Hey guys,
so alot of people shoot with their mobiles video and photos that can serve as evidence in the future (court cases, lobbying, influencing public opinion etc).

Most are sharing this stuff on social media, and then it’s retweeted etc. But as well full well know, you cannot rely on commercial platforms to serve as accessible archives for multiple reasons.

So I wonder, what good solutions are out there for collective sharing and archiving of important materials?