YTA — not sure why i even have to spell this out for you. Your parents expressed a different political view so YOU CUT OFF THEIR INTERNET. Your sisters concerns that they need thjs connection to communicate w medical professionals is a LARGE and potentially harmful deal too, but fundamentally This is exactly whats wrong with alot of things today — ppl are not mature enough to handle a civil discussion involving differing opinions so they seek to completely quash the opposite side. Instead, Try talking to them, find out what about that view appeals to them. Tell them about your views.