What are the root causes of the recent clerical sexual abuse scandals within the Catholic Church?

**What are the root causes of the recent clerical sexual abuse scandals within the Catholic Church?** A comment to this question (**Is it known which seminary or seminaries produced the majority of Catholic priests who were accused of sexual abuse in the USA?** ) lead me to ask this one: > Considering clerical abuse is a worldwide phenomenon that crosses all denominations, looking for a few seminaries as the root cause seems misguided. Protestant churches have no requirement of celibacy, but they are not immune to these vices either. What are the origins of this sinful phenomenon within the clergy of the Catholic Church.