There is an easy solution. It isn't filternet or guns or things like that.

It is making clear to people what the real danger is.

For all of human history, up to the recent empire age, tribes have been the rule because in tribal society traditions develop which lead to stability and growth.

Today melting pots have replaced tribes, and there is high level collaboration between the U.S. melting pot and the Chinese melting pot, for example, to divvy up control of tribal groups and assimilate them.

Most of the indigenous cultures in Australia and the U.S. which existed 300 years ago have been extinguished. Their DNA absorbed into the conqueror.

A melting pot must continue consuming old societies or it will collapse itself.

The U.S. has run out of easy food. There are no  strong indigenous societies left in North America, so decay is setting in.

China still has a century worth of indigenous food, Tibetans, Uyghurs, etc.

Once tension between China and India reaches a certain level, India will be forced to start consuming the cultures it has been protecting so far.

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The solution is to support reindigenization.

Prevent Chinese power whores from rattling on about their need to own Taiwanese and Hong Kongers. Why shouldn't Taiwanese and Hong Kongers own China?

Smack down the U.S. power whores until they return sufficient land and cash to indigenous groups to attempt a recovery.

Put Bolsonaro in a blender with a coconut and some tequila and, well, lots of things should be done.