John Oliver on success of "Last Week Tonight," Snowden interview, Baltimore riots

HBO's "Last Week Tonight With John Oliver" takes a satirical look at the news, as its fearless host tackles serious issues. One year in, the program is enjoying a reputation for scathing wit. John Oliver joins "CBS This Morning" for a wide-ranging conversation, from his Edward Snowden interview, impact of "Daily Show" host Jon Stewart and the changing faces in late night television.