Mark Henry has a warning for ex-WWE wrestler Lio Rush ... stop defaming me, or my (Harvard educated) lawyers are going to file a lawsuit against your ass!!
Let's explain ... earlier this week, Rush -- who was recently released by WWE -- fired off a barrage of Tweets attacking the Hall of Famer.
Rush accused Henry of torpedoing black wrestlers' careers, writing ... "This is why African American talent on the biggest platform will continue to not have equal opportunity because people like you constantly tear your own people down.