Steelers head coach Mike Tomlin is fed up with the NFL's lack of diversity on the sidelines ... calling out the league and saying "it's a joke" more minority coaches aren't getting gigs.
"We just have to be better," Tomlin said Thursday on "Good Morning Football."
"Why sugar coat it? There's less than half the minority coaches in the NFL today than there was in 2007 when I got my job."
FYI -- there are currently only 4 minority coaches in the league in 2020, while there were as many as 8 in 2011 and 2017.