The USA is not really a single country like e.g.Sweden etc. It is a union of states, each of which has its own laws which are only subservient to the Federal Law. It is more akin to a super-EU despite its acceptance as a single country by everyone and international law. It is also a very young country and still developing.
Hence the difference between Alabama and California in education, attitude to drugs, blacks or coloured people etc.
So when we discuss racialism it is best to discuss the individual state-statistics rather than lump them all under umbrella of the USA.
I love the highly developed intellectually developed areas of the USA but would not chose to visit or live in those southern states who do not appear to accept that the civil war is over and that the blacks are not their inferiors but are equal to the whites. Similarly many southern states are religious maniacs who don't even accept Darwinism.
Sure, it's a great country and economically the most powerful but like all countries it has weaknesses to address - maybe more than the older ones.
Certainly time to get rid of the gun-laws but no political party could achieve this - crazy and the reason for the USA's horrific civilian violence.
SIQ.