No mention of Rodgers and Hammerstein in the article.
Hammerstein was a great humanitarian and he always included elements in hit plots about social problems. In Oklahoma! the disturbed and malevolent behaviour of Jud Fry is an important element in the plot - and his death occurs towards the end. A serious sub-text of Carousel is spousal abuse. And South Pacific is all about miscegenation - a subject Hammerstein had previously explored with Jerome Kern in Showboat.