Mom being unreasonable?

i think that my mom is being extremely bull headed and unreasonable. she thinks that Saturday Night Live and The Office are terrible! she says that she should just cancel netflix so i cant watch snl. also, i was at school for a camp and my friends and i were watching snl bits and my mom looked at the netflix history and saw that i had watched it and threatened to ground me. btw, snl is rated TV 14 and i am 14 so i am old enough. how do i get her to see my side of things?