I don’t believe this whole thing is about the price of petroleum products. It’s getting out of hand over there. Something else is going on.
“Something else is going on”
Kazakhstan is just prosperous enough that people realize how corrrupt the government has become. There has been pressure to elect instead of centrally appointing regional leadership. The fuel price is more the trigger, setting off building frustrations.
There probably are other dimensions, but this seems plausible:
Kazakhstan produces huge quantities of oil and gas. Domestic prices have been kept very low, as a form of welfare. When the subsidies are reduced, truckers, farmers, etc., and anyone who depends on cheap gas for heat and cooking, feel the squeeze on their already low standard of living, — and get desperate. Everyone assumes corrupt oligarchs are raising prices to enrich themselves off the country’s natural resources — and get angry. Politicians manipulate that anger into violence/insurrection.