Overview: Robert Mueller talks about the Russia probe for the first time. Director Rick Rowley LIVE on his new Showtime documentary "16 Shots" about the Laquan McDonald shooting and cover-up. Kamala Harris makes the case fo what it will take to beat Trump in 2020. Joe Biden is criticized for embracing a little girl. Wallace Global Fund gives the Henry A. Wallace Award to the Sunrise Movement. Mitch McConnell laughs at his own hyprocrisy.