Samuel, Kira and Rosália were left without a reaction, not only because their masks were falling off in front of everyone, but because of Nina's posture. They were afraid of Nina and Dominic together because they feared the CEO's power, but they didn't count on him giving his wife power to defend herself.
The angry people started shouting for the police to take that family away, because they were cruel.
It was just a mess and Dominic ends up waving for the police to take them away, as enough was enough, as Nina ended up being emotionally shaken when remembering what happened at Kira's hands.