1. Tonight on "All In," we have the latest on the violence sweeping Iraq, as Secretary of State John Kerry landed in Baghdad and ISIS seized more territory over the weekend. State Department Deputy Spokesperson Marie Harf joins us; as well as Sharif Abdel Kouddous, correspondent for Democracy Now and a Fellow at The Nation Institute by phone from Cairo.
2. Tuesday is runoff day in Mississippi's Republican Senate primary! We've got the scoop on the Cochran campaign's attempt to woo African American voters; Derrick Johnson, President of the Mississippi State Conference of the NAACP, joins us.
3. Where are the most segregated schools in the country? We've got the surprising answer tonight on All In America: Behind the Color Line. Plus, ProPublica's Nikole Hannah-Jones and Georgetown Law professor Sheryll Cashin are here to discuss.
4. And don't miss our preview of tomorrow night's "All In America" installment on violence in Chicago.