Real Time with Bill Maher Season 19 Episode 30 : Steven Pinker; Robert Costa; Michael Render ("Killer Mike")

This week features a one-on-one, in-studio interview with professor of psychology at Harvard and author of the book "Rationality: What It Is, Why It Seems Scarce, Why It Matters," Steven Pinker. This week's in-studio panel discussion will include Washington Post reporter and co-author of the new book, "PERIL," Robert Costa; and Michael Render ("Killer Mike"), activist and musician who's one half of the group, Run Th...