First: Does journalism face its gravest danger yet? Christiane speaks to reporter Amy Goodman and filmmaker Tia Lessin, about their new documentary exploring the fight for an independent press.

Then: A powerful new exhibition imagines the life Emmett Till was denied. Historian Sarah Lewis and the Reverend Wheeler Parker Jr. join the show to discuss.

And: Long before Silicon Valley dominated our lives, Paulina Borsook warned of its growing power. Michel Martin speaks to the journalist who saw today's tech titans coming.