Lol, bro just watch the interview Marc Tabu made in the same video you posted, he explained there every thing.
Btw the concert didn't stop. It was just that everybody went outside, because they were already mad that Koffi started the concert around 4:00 in the night and then when they saw Marc Tabu bleeding, all journalist went out for solidarity and the rest of the people following with just a few people (fanatics) staying inside.
Koffi sended security-guard Tony Mukumbusu to beat Marc Tabu, because in his opinion Marc Tabu became against him. He didn't like the way he was promoting Wenge Maison Mere alot on tv and the way he was never coming to his concerts to film or receiving him at the airport like the way he was doing to other artists (He was also mad because of the way he exposed that his last Zenith was a huge mpiaka and promoted Karmapa). Other claimed that it was an indirect message towards Tabu Ley, who made a little joke about Koffi's past.
Everybody was bad against Koffi at that era and Marc Tabu's father Tabu Ley also attacking Koffi strongly in the media. After that the Congolese press decided to put 80 days ban on Koffi on all media and Koffi would apologize to Tabu Ley. In the same period he had a lawsuit against his former dancers (who accused him for rape, making pornvideos with them, peeing on them), bodyguards, Zobozi and his director Assitou Mbo.
