We struggled quite a bit with this question. I think our initial instinct was to be a bit militant about it, but the reality is there is so much of this in our society that unless you're willing to go full Captain Fantastic they will inevitably be exposed to these types of things growing up. It happens through relatives, well-meaning friends, birthday parties, school, media, etc, it's impossible to try and weed it all out. I guess now we take the approach where if someone gives them something we wouldn't, we don't make a big deal about it, especially not in front of the kids. Kids are very malleable and fickle, and as soon as they forget about it(maybe an hour, a day, whatever), we just throw it away. We do make it clear to our immediate family what we don't find appropriate, but at the same time, we're fully conscious of the culture we are a part of. It's not necessarily an easy line to walk, and there isn't really much guidance out there, but we feel it's important to be strong in our course, without being so inflexible given the realities.