U think x-men inappropriate for kids. In Lithuania no one sees problems. X-men is suitable for 7 years old and up. Parents let kids watch it.
TV series like: Game of thrones, House of Cards and etc. are only inappropriate for teens under 14. No problems about sex, drugs, violance, nudity.
You americans are afraid of everything. You fear if your kid sees boobs, hears words like f*ck, s*it