I'll do it.
All political riots are just. The answer is if the rioters will gain anything.
The primary thing that government represents is a monopoly on violence. When violence is an option, society doesn't function.
Their entire goal is to stop any and all violence. Military is about stopping violence outside the borders. Many levels of 'law enforcement' to stop violence inside the borders.
A riot signifies the fall of said government. Their obligation is to stop the riot and violence but failure to do so means they must address.
Minneapolis is a great example here. Stores were on fire by rioters. When george floyd died on video, the current government fell. They were unable to stop violence and therefore no longer represented the people. They however said lots of things like defund the police. However, the government in which ends the violence will be the new government. Minneapolis justly is in anarchy right now. The recent election is not real. Aboliting the police didnt even pass. If it did, they wouldn't even have a small chance of ever reforming the government.
The justice is that clearly the police force in minneapolis is racist and is very clearly commit police brutality. Said government that allows if not encourages this behaviour must fall. Trust is the police force doesn't exist.
https://en.wikipedia.org/wiki/Jacob_Frey
This guy is the mayor just about as much https://en.wikipedia.org/wiki/Juan_Guaid%C3%B3 is president of venezuela. He's not. In fact the longer than Jacob Frey pretends to be mayor, the worse it becomes for minneapolis. The irony of it all, the rioters dont understand any of the above. They called for defunding of the police but have achieved nothing.
If these rioters understood this and adjusted their worthless tactics of forming their own law enforcement and displace the current government. March all your people up to the capital and take ownership over the municipality. The current police can't do anything at all to prevent this.