Believe it or not, a lot of things have changed since the 60's. Name a society with more rights, more opportunities for the historically oppressed. Deny reality all you want, you're only hurting yourself.
You're attempting to refute an absolute statement with a relative one; "--- are oppressed" / "--- are less oppressed than ever." These two statements are logically consistent.
I question your definition of "objectively" in this situation
Of the your two comments thus far, neither is even remotely what one might call a counter-argument. "Nuh-uh!" does not count. There's still time to edit the comment, care to throw me something more substantial to work with?
What does "least oppressed society", a comparative term, have to do with the claims made by the parent commenter? That designation does not preclude the existence of any disparity or injustice.
Where do you even begin to pick apart a statement like this... The US is completely fucked with regards to racial tensions, it's a complete shithole in that respect, for the standard of a developed nation. Race permeates public consciousness to a degree not really seen anywhere in Western Europe. Until the 60s there was institutionalised discrimination for crying out loud. Even today there is a measured, objective disparity in: arrests, convictions, police brutality, not to mention job applications and other areas. Can you compare this to a country like Spain or the Netherlands?
"Least oppressed society in HISTORY", this reads like a Trump tweet. Sure is some egregious lack of self-awareness.
https://en.wikipedia.org/wiki/Loving_v._Virginia required Supreme Court to override laws that violated the constitution.
If that's your standard for "least oppressed", I think your standards are very low.