@YouTube , I just opened a @pewdiepie video and an advertisement popped up. Normally, not a problem. This time, however, it was an explicit rap music video. Not a huge fan. Kids are on your app and they don't need explicit gangster rap videos before their PewDiePie video. Thanks.
Have you tried controlling the types of ads you see by editing your preferences here: https://goo.gl/vVWxiX ? Also we have the YouTube Kids app, it is a child-friendly way to access YouTube: https://goo.gl/ESShpW . Hope this helps.