handling social media after birth

Hey guys. I have one big issue and I'm not quite sure how to handed it. I don't want my baby to be put on the social media after I deliver him. I deliver him on Wednesday. I'm married.. and my side of the family understands this. But my husband family.. they are a bit well unlike my hubby. How can I tell them without being rude that I don't want our son to be put on Facebook? My husband won't be there for the delivery, he won't make it there in time but he will be there that day in the afternoon due to work. It'll just be me and my mom for my schedule c section. His family take things to heart plus we hardly know his each other. I just want them to respect my wishes. They said I was rude because I requested no visitors during my prep and mg recovery. I told them I just want peace and to rest after my delivery and then it's okay to visit. I don't wanna wake up from a nap and he is on Facebook! Because I can get very mean and ask them to remove it.