Robert Redford, Robert Duvall, Dustin Hoffman, Al Pacino, Glenn Close...those are some of the folks who made show biz breakthroughs because of casting director Marion Dougherty. Another person was Danny Glover.
The success of LETHAL WEAPON inspired Hollywood to do more interracial casting/auditioning. This was major. And Marion Dougherty kicked the career of the talented actor/social activist Danny Glover way up the ladder. Also, because Danny Glover is African-American, other black actors got work when LETHAL WEAPON sequels were made that showed his character's family.
I highly recommend watching the 90-minute documentary about Marion Dougherty called CASTING BY. I saw it on HBO back in 2013. Marion Dougherty was a great creative force in the film business and her vision did indeed help LETHAL WEAPON. She was a trailblazer in the Women In Film category. Here's a trailer.