today we will hear first from clarence taylor, author of "reds at the blackboard," communism, civil rights and the new york city teachers union. clarence is a professor of african-american religion and civil rights at baruch college in new york city. his book examines other early teachers unions here in new york where the champion of social justice and civil rights and was persecuted and prosecuted because of his progressive stances to the communist party. then we will hear from william adler the author of "the man who never died," the lifetimes and legacy of joe hill american labor icon. i read bill adler's book for a story i did for "the new york times" and it is a marvelous historical research and the book shed some important new light on the case of this labor hero, joe hill, raising new questions about how he was railroaded to to a conviction into his execution before a firing squad in 1915. and last we'll hear from brian purnell, one of the co-authors of "black power at work," community control affirmative action and the construction industry. ryan is professor of african-american st