Ever one to know when a hit is ready, Stevie Wonder deployed dozens of celebrities to one end early this month: sharing their perspectives on what is needed to ensure Dr. Martin Luther King, Jr.'s "I Have a Dream" mentality lives on forever.

The video released in Wonder's first-ever tweet, published about three years after he technically joined Twitter – and on the day, April 4, that marked the 50th anniversary of Dr. King's slaying. Among those Wonder's crew called on for the opportunity: Serena Williams and Billie Jean King.

"My dream is equal opportunities for everyone," Williams says at the 1:30 mark in the clip, which clocks in at more than five minutes overall. "Freedom and equality for all," King emphatically shares at the 1:50 point.

These all-time greats of tennis appear among a sundry coterie of stars including Barack and Michelle Obama, Lupita Nyong'o, Katy Perry, Naomi Campbell, Tyler Oakley, Mary J. Blige, Michael Strahan, Kamala Harris, Samuel L. Jackson, Gloria Estefan and many more.

A lot of provocative and overlapping thoughts are shared in the clip. Let's hope a good many of them become realities for our world sooner than later.

Follow Jon on Twitter @jonscott9.