While clearly true, I think we'd have to rephrase that as "all cultures" - here in the US people are sleeping on the sidewalk outside my office. In the PRC, they're willing to gamble on geoengineering which could poison people (just not people in power). I can't think of any current society that really values every member - but we can keep working towards that goal...
>I think we'd have to rephrase that as "all cultures"
Absolutely agree, but here we have the freedom to protest the government itself, and do so openly for as long as we need to to make a change. They literally have a dictator for life that just came into power weeks ago.