I personally believe that parents need to be responsible for their children, teach them about the world, rather than shield them from everything. It doesn't do much good, kids will be exposed through this stuff anyways, generally through peer groups, but I mean, it's just part of life. There's nothing wrong with sitting down with your child and saying "what these people are saying and talking about, it's something they're choosing to do as adults who are old enough to make these decisions." And answer any questions they have. Just like you can explain why blowing up bad guys while skydiving in your car is okay in a movie but a terrible idea in real life. There are a ton of learning opportunities in these things that are good for kids. Now I'm not saying you should explicitly give these things to your kids, but putting them in a bubble a) doesn't work and b) can be detrimental to their development