When Neymar is sent off, he shouts down the camera on the touchline saying: "I hit [Alvaro] because he is a racist".
Andre Villas-Boas' side were leading 1-0 when a brawl ensued in the middle of the pitch.
Twitter users attempted to uncover the exact moment in question, though one particular run-in between Neymar and Gonzalez appears pretty damning.
"Now I want to see the image of the racist calling me "son of a b**ch monkey". that is what I want to see!"
Neymar, in his first game since testing positive for the coronavirus last week, was dismissed in injury time for hitting Marseille defender Alvaro Gonzalez in the back of the head, which some commentators said was a "rabbit punch". "Now insulting and bringing racism into our lives no, I don't agree", the 28-year-old began.
After that loss to Bayern, Marseille star Dimitri Payet wasted no time in reminding PSG that his side remains the only French team ever to have won the European Cup or Champions League trophy, taking to social media shortly after full time in the Estadio da Luz.
Once order was restored referee Jerome Brisard showed a straight red to Neymar, Kurzawa and Amavi for their part in the fracas, the former going following a consultation with VAR, with Paredes and Benedetto also ordered from the field after picking up second bookings.
PSG's Leandro Paredes and Marseille's Dario Benedetto soon followed before Neymar's red card. "We'll have to look at it".
PSG sporting director Leonardo added: "We will deal with that internally with our players".
"A total of 14 cards were brandished and five of them were red, which means the match got out of control".
Angel Di Maria's effort for PSG was ruled out in the 62nd minute.
PSG's last goal came in the 3-0 win over RB Leipzig in the Champions League semi-final on August 18, and Neymar poked wide from a Pablo Sarabia cross before the contest turned ugly at the finish.