Dikembe Mutombo says he's almost numb to the news of MORE mass shootings in America -- telling TMZ Sports he's seen it so often since moving from Africa that "nothing shocks me anymore."
The 53-year-old NBA legend touched down at Reagan National Airport in Virginia (where he got tons of love from fans BTW) and made it clear he's disappointed the United States hasn't taken a stronger approach to eliminate gun violence.
"The people have spoken enough, nothing has been done," Mutombo says.
Mutombo moved to the U.S. from the Congo back in 1987 -- and says he's pretty much been desensitized to the terrible gun-centric headlines that have been dominating the news.