Oh, the wording is all mine, inferred from this fairly thin set of news reports. But:
- radical: doesn't get much more radical than an armed uprising
- indigenous: they're Purepecha. This is very important. While they're Mexican nationals, and would be called Mexican by Americans, they're not of Spanish descent. They're descendents of a tribe unconquered by the Aztecs. Racial discrimination against people of indigenous descent is common all over Latin America.
- feminist: all the news coverage points out that the initial uprising was initiated by women.
- anti-colonial: outsiders of a different ethnic background coming onto traditional tribal land to steal natural resources? With the collusion of the police? Sounds pretty colonial to me.
- self-organising: found a bit more on this; https://elenemigocomun.net/2018/08/cheran-names-government/ ; https://www.nbcnews.com/news/latino/after-long-fight-self-go...
It's crucial to being exempted from normal politics such as elections. "arguing before the courts that there were provisions in Mexican law that permit indigenous communities a form of self-government based on their customs"; sounds analogous to the semi-autonomy of Indian reservations in the US.
>> "set of family relationships embedded in the matriarchy running the town"
So it looks like I overstated this a lot, but if you refer to the NBCnews article above it's a "council of elders". And they don't have parties? Family is a party you're born into. It's more or less the default arrangement of pre-bureaucratic politics. It's hard to avoid even in modern states. Add up all someone's in-laws and second cousins and it's easy to get to hundreds of people, which goes a long way in a community of 20,000.
BBC: "Most people who live in Cheran are from the town. Social mores dictate that locals marry locals - there are very few outsiders here. Families are large, and they are close. Everyone knows everyone else. And that is the foundation of the town's unity."
NBC: "Patricia Hernández, a taco vendor and mother of four, accepted the challenge to be part of their government when her neighbors chose her to represent their fogata. She is now one of four women who will govern Cherán for the next three years as part of the twelve-person council known as K'eri Jánaskakua.
"Before the government didn't take us [women] into account, until we were the ones who started this new government seven years ago," said Hernández to NBC News. "We said 'Ya Basta!', (Enough!) to put an end to this violence."
(more feminism! with machetes!)
It doesn't "suddenly occur", it was always there, it just took a lot of adversity to mobilize it to the level of armed self-government.