Richard Curtis has made a nigh-on 30-minute film about protest, mainly through protest songs. He’s had a little help from Chiwetel Ejiofor and Colin Firth, and there’s not really any knocking the soundtrack.
The film was designed to be seen live, and projected onto the side of London’s Tate Modern Gallery, but that projection was filmed and is now online so you can get angry in the privacy of your own home. In a good way.https://vimeo.com/68398484
If you want to watch a lot of protest songs, the One campaign have a YouTube channel filled up with literally dozens, all coinciding with this campaign.