We talked to the legendary MC on "TMZ Live" to get his thoughts on the latest shooting death in hip hop -- Migos rapper Takeoff being gunned down in Houston -- and Chuck says it's crazy how folks think it's normal to lose rappers to gun violence.

Chuck says attacking someone with a gun should be considered "abnormal behavior" ... and he's lamenting the fact it's become so commonplace in America, people almost seem to shrug it off as just a part of life.

As we reported ... Takeoff was killed during an early morning shooting in Houston, with emergency audio revealing at least 5 shots were fired. We're told Takeoff and Quavo were playing dice at a bowling alley when an altercation broke out and someone, or multiple people, opened fire ... fatally shooting Takeoff.

Chuck D says gun violence in the hip hop community has been ignored for far too long -- he says any other industry with so many fatalities would have addressed the issue before it became normalized.

He adds ... people have grown up thinking a rapper dying young is a normal thing ... and he says it's not only about the death itself, but also the manner -- drugs and gunshots.

Problem is, Chuck says too much music glorifies guns and drugs, whereas before, it was a reflection of what was going on in the community, not a dictation.