Coming up on today’s show:

• Elizabeth Warren endorsed Hillary Clinton for president on Thursday, and some believe the senior senator from Massachusetts may be tapped as Clinton’s running mate. What do we know about Warren’s strengths and weaknesses? Monica Potts, a fellow at New America, a Washington think tank, and John Cassidy, staff writer at The New Yorker, weigh in.

• After 40 years, Congress has reached an agreement to update the 1976 Toxic Substance Control Act. But does it go far enough to protect consumers? Scott Faber, vice president of government affairs for the Environmental Working Group, answers.

• Rafer Guzman, film critic for Newsday, drops by to review “Warcraft,” a new fantasy film from Director Duncan Jones; the new comedy/action flick “Now You See Me 2” with Daniel Radcliffe; and the star-packed drama “Maggie’s Plan.”

• How do politicians choose music to represent their campaigns? And what happens when musicians don’t want to be associated with a candidate? Melissa Locker, culture reporter for The Takeaway, weighs in.

• On Thursday, Libyan forces made headway against the Islamic State in Sirte, the group’s most important base outside of Iraq and Syria. VICE’s Simon Ostrovsky reports from the front lines on the fight to save Libya.

• After a Muslim prayer service on Thursday, boxing legend Muhammad Ali will be laid to rest today. We hear from one of his biggest fans and a connoisseur of boxing, actress Rosie Perez.