Complex sentence: The vast majority of sexual offense victims are known to the offender, either relatives, family friends, or other adults such as teachers; this is contrary to media depictions of stranger assaults or child molesters who kidnap children unknown to them.
Split into simpler sentences: The vast majority of sexual offense victims are known to the offender--including friends, family, or other trusted adults such as teachers. This is contrary to media depictions of stranger assaults or child molesters who kidnap children unknown to them.