This ignores the negative impact of keeping smaller groups limited by preserving their language. In Guatemala, many of the "Indians" have their own languages it

This ignores the negative impact of keeping smaller groups limited by preserving their language. In Guatemala, many of the "Indians" have their own languages it dialects, some of which are incompatible with each other. There's little opportunity for use of these languages apart from the town they live in. To be involved in commerce, read about current events, or even be treated well, you need to have great Spanish. My parents have a medical clinic in one if these villages. When the government started making some of the classes be taught in the local language, the parents were upset, knowing that this would hurt their children. They viewed it as another way to keep the "indian" population back. And they're correct. So while there may be good reasons to preserve languages (like preserving art, or historic towns), someone should be funding that directly, rather than externalizing the costs on to these indigenous groups.