Marcel was not a pushover that they could treat however they wanted and go scot-free. And he made sure they knew that tonight.
When Marcel took over from his father, they had been respectful since that wasn't an easy feat to achieve - no one was stupid enough to cross Daniel. However, unlike his father, Marcel was calm and generous and their regard for him vanished in no time; they forgot that the son of a monster is also a monster.
Marcel gave them the illusion of being soft, weak, and lenient, but now, it was time to take back that privilege he had given freely. It was time to become who he truly was, Marcelo Luciano, the ruthless heir.
So he struck.
The attack was not just a warning, Marcel exploited their weaknesses, thereby proving that he could bring them down in the twinkle of an eye should they be a hindrance anymore.