What do you need to know about what happened this week?
Civil rights activists including April 28 guest Rev. William Barber, president of the North Carolina NAACP were arrested and held overnight for protesting the state GOP's legislative agenda.
The FDA decided this week that emergency contraception will be available without restrictions to women and girls older than 15 despite the fact that it is safe for women and girls of all ages to use and past opposition by the Obama administration.
Oregon Sen. Jeff Merkley, a Democrat, is proposing a new filibuster reform bill.
More than 700 people were killed in Iraq in April, making it the most deadly month in almost five years.
Watch the video to find out what Steve Kornacki's guests think we learned this week.