The House I Live In 1945 movie

Frank Sinatra, apparently playing himself, takes a "smoke" break from a recording session. He sees more than 10 boys chasing a Jewish boy and intervenes, first with dialogue; then with a little speech. His main points are that we are "all" Americans and that just one American's blood is as good as another, all our religions are equally to be respected. (The film was made to oppose anti-Semitism and racial prejudice at the end of World War II.)