Assess the valence intensity of the snippet "Yet he was the first to risk talking about grown-up themes in an industry so timid that his Washington station, WTTG, refused to carry live his 1960 interview with the Soviet leader Nikita Khrushchev." based on the mood of the author. Offer a numerical rating between 0 and 1, with 1 representing highly positive and 0 representing highly negative.