I think in the US there's more of an emphasis on particular groups due to historic precedents. For example "Hispanic Heritage Month" is mostly unrecognized by the celebrators and the celebrated.

However, Black, LGBT and Indigenous folks tend to experience more representation and emphasis due to its long history with [White] American social/legal structures.

As it gains more acceptance, what you end up seeing is more magnification of certain things (is it enlightened or is it just destructive?) and you see more capitalizing of the culture's social currency (corporate branding, etc).

But I think at the end of the day, what you're asking is the ultimate result everybody wants - a society where everyone is who they are. For a long time that was beaten out of people though. I suppose that's why it's been slowly embedded into modern American tradition.

Which is why Bitcoiners should march every year until it becomes an annual music festival... or a violent revolution 🌊