Service providers should act as an utility, such as roads, waterworks, sewers, etc.

We have laws set in place where we decide who can drive on roads using which kinds of vehicles, and road operators and owners (not sure how road system works in USA, in my country, some roads are country-owned, some are owned by the municipality, and some private ones can join the road system - eg. the long road from the main street to the IKEA entrance), and if the driver has a licence and a stret legal vehicle, s/he can drive on all those roads, even if he carries gay porn and anal dildos, and the municipality is full of christian/muslim radicalists.

So, as long as the content is legal (regarding the laws of the country), no service provider should be allowed to block you from using that service and/or connection to view that content.