Omg my parents...😡

I asked my parents not to yell and argue in front of my son and they got mad. Like why? They started saying this is their house and that was the last time I talked to them like that in their house. Ok? And this is my son, therefore I have the right to say how I feel concerning him. I mean am I wrong ? I just don't want any yelling done around my baby and I let them know nicely. I don't see what the big problem is. Btw. I don't live with them. I came to visit them.