Quite a few things are a bigger deal than this, but get no attention. For example, the same could be said for our government-funded genocide of Native Americans. I don't know why the denial is allowed to persist.[1] In Germany holocaust-denial can land you prison time. America has the only remaining legitimate government in the world that committed an attempted genocide against its people.

1 - www.latimes.com/opinion/op-ed/la-oe-madley-california-genocide-20160522-snap-story.html