Tell us you don't have kids without telling us you don't have kids. Short of totally unplugging your children from broader society via homeschooling, joining a commune, or similar extremes, children are exposed to whatever other children's parents permit through nothing more complicated than their interactions with other kids. An example from pre-digital times would be that one kid who's dad kept a stash of nudie mags unsecured which invariably lead to hushed giggling in the back of the bus.

I was that kid (I mean one with boundaries set, with parents that acted against all of this, just to be clear) and now a father, with my second kid on her way. Still very young, so I can't claim to have much experience. But I am getting ready to stand against all of this, and I do intend to delay their exposure to social networks, mass information, etc. as much as possible.

At least until their character is formed and they have developed essential human traits like being able to read a book, being able to be patient, being able to communicate in person, and to hand-write. You know, that sort of ancient wisdom.

Edit for clarification.

Brace yourself for the day your kid comes home armed will rickrolls and starts muttering "deez nuts" under their breath. It's coming way WAY sooner than you think. ;)