The moment you’re referring to appears to be the Jacksons’ reunion segment during Michael Jackson’s 30th Anniversary Celebration at Madison Square Garden, when Michael invited Randy onto the stage as part of the performance. One discussion thread describes it as a playful, in-the-moment brotherly exchange during the “ABC” section of the show, rather than anything serious.

What happened

  • The 30th Anniversary Celebration took place on September 7 and 10, 2001, at Madison Square Garden in New York City.
  • Michael reunited with his brothers, including Randy, for a medley of Jackson 5 songs.
  • A forum recap says Randy shouted a phrase during the “ABC” performance, and Michael reacted in a joking, performative way.

Why people noticed it

  • The clip stands out because it feels spontaneous and a little chaotic, which made it memorable to fans.
  • Some viewers read it as playful brotherly banter, while others felt the moment looked awkward on camera.

Quick context

The larger event was a major pop-culture special, with a high-profile reunion and multiple celebrity performances, so small improvised moments like this became especially talked about. The show is often remembered both for the music and for little unscripted interactions between the Jackson brothers.

In short: Michael approaching Randy on stage at the 30th anniversary was part of the Jacksons’ reunion performance, and fan discussions generally treat it as a playful onstage moment.

TL;DR: It was a brotherly, playful stage moment during the Jacksons’ reunion at Michael Jackson’s 30th Anniversary Celebration, not a major incident.