The New Republic has another Reinhold Niebuhr essay from the 1950s available on their site. This one is Niebuhr's reflection on justice and the death penalty. Excerpt:
While this exhaustive analysis of the whole problem of capital punishment achieves its interest primarily because of the light it throws upon one of the most curious ironies of Anglo-Saxon justice, it should have the additional attraction to American readers, that it may sensitize their conscience in regard to a moral problem in which our nation has adapted the standards of the “mother” country without realizing that these standards were the dubious by-products of a great legal tradition.