For some, this is not activism. It’s not protesting. It’s just about causing mayhem. They hate cops because they have a problem with authority in general.
You can lock them up, fine them, do whatever, it’ll never have any effect. They will just get out of jail and set fire to another police car given the chance.
I’m not saying the protesters are right, but I will always defend peaceful discourse and all opinions, even the most vile, unfounded bile can have their stage. But they must then also be open to reason and proper discussion. There is no situation where setting fire to police vehicles (paid for with my taxes, by the way) is part of a civilised debate.
I read online that you can incorporate shifts like V-I at the end of a bar, and usage of I-vi and II-V are common in your genre. For C major, this means:
G-C C-Gm D-G
Source
And here is a simple guide on why the Roman numerals and what they mean. You have to apply the number in the sequence to the correct note and then correspond it to a chord. Lowercase for minor chords.
Good luck!