non sexual violence is a lot more black and white than sexual violence. People generally know when they have committed a violent act. The same cannot be said for a sexual assault where one party thinks everything is ok and the other doesn’t. I don’t think the approach to violence is the same for that reason imo.
Where you draw the line is hard to call but certainly a Christmas song that portrays persistence and refusal to take no for an answer in a joking fashion and which may belittle the concept of consent to some (and I stress some here as the majority of people will not be influenced that way) is a place to start. Not knowing where to draw a line doesn’t mean that you shouldn’t start to attempt to fix things