Ne-Yo is PISSED at Supreme Court Justice Ruth Bader Ginsburg -- chalking up her anti-Colin Kaepernick comments as a bunch of "dumb s***."
Of course, Judge Ginsburg started a firestorm when she described Kaepernick's protest as "dumb and disrespectful" ... and added if he wants to be "stupid, there’s no law that should be preventive."
Enter Ne-Yo ... who told us, "She's right. There [are] no rules to stop people from being stupid ... same way there are no rules to stop her from saying the dumb s*** she just said.