1940 Death Vladimir Jabotinsky, founder of Revisionist Zionism, dies 1932 Death Eduard "Ede" Bernstein, German marxist/revisionist, dies at 82 1925 Birthday Warren G. Bennis, born in New York City, New York, scholar, author, Leadership Studies pioneer, studied group behavior at MIT, prompting interest in the then-nonexistent field of leadership, published 'Revisionist Theory of Leadership', 1961, stating that humanistic, democratic-style leaders can best manage change in the leadership environment