David Hogg, the 17-year-old head of the student TV station at Marjory Stoneman Douglas High School in Parkland, Fla., talks about Wednesday's mass shooting that killed seventeen classmates and teachers, and how the American people should respond to political leaders who do not address the dangers of gun violence.
Martha Teichner profiles the stage and screen actor, star of "Platoon" and "The Last Temptation of Christ," who is nominated for his third Oscar for the acclaimed film, "The Florida Project." Willem Dafoe talks about his career trajectory as an actor, including his nearly three decades with the experimental theater company The Wooster Group, and his love for New York.
Raised in poverty, uneducated, a working class figure whose political ethos was "my way or the highway," Andrew Johnson's surprising rise to the Oval Office upon Abraham Lincoln's assassination was followed by a torturous relationship with Congress and the first impeachment of a U.S. president. Mo Rocca looks back at the life of the Southern Democrat who was one of America's most unfortunate chief executives.