Sunday on ‘This Week’: The Latest on the Tragedy in Charleston

— -- This Sunday, ABC News’ Martha Raddatz speaks to Charleston, South Carolina Mayor Joseph Riley after the deadly shooting at the Emanuel African Methodist Episcopal Church that left nine dead.

Plus, insights and analysis from the New Yorker’s Jelani Cobb and author Charlayne Hunter-Gault.

Then, GOP presidential candidate Rick Santorum responds to the tragedy in Charleston and the Pope’s controversial new encyclical on climate change.

And the powerhouse roundtable debates all the week’s politics, with Democratic strategist Maria Cardona, Republican strategist Sara Fagen, and host of NPR’s Morning Edition Steve Inskeep.

See the whole political picture, Sunday on “This Week.”