Ole Miss and Mississippi State may be bitter rivals on the field, but the two Mississippi schools are coming together for a cause.

Hugh Freeze and Dan Mullen took out a full-page ad in the Clarion Ledger calling for the removal of the Confederate emblem from Mississippi’s state flag. Joining Freeze and Mullen were author John Grisham, Jimmy Buffett, Archie Manning and actor Morgan Freeman.

From the Clarion Ledger:

With other states removing their Confederate battle flags, Mississippi remains the last with the Confederate emblem flying over the statehouse.

“It is simply not fair, or honorable, to ask black Mississippians to attend schools, compete in athletic events, work in the public sector, serve in the National Guard, and go about their normal lives with a state flag that glorifies a war fought to keep their ancestors enslaved,” the letter says. “It’s time for Mississippi to fly a flag for all its people.”

Here’s the full page ad: