'Straight Outta Compton' Star -- Disses Blake Griffin ... You're No Kobe!

Ice Cube hates the Clippers ... and now, it's clear his movie star son feels the exact same way.

O'Shea Jackson Jr. -- who played his dad in "Straight Outta Compton" -- was telling us why Kobe Bryant's shockingly low rating in NBA 2K16 is super disrespectful ... and to drive home his point, he opened fire on the Clippers.

Even if the Lakers suck again, the Cube family has made it clear ... they're purple and gold for LIFE.