Serial killer Bruce McArthur was a mall Santa Claus who had a criminal record for a violent crime. When McArthur was a mall Santa Claus and children were sitting on Santa lap (McArthur lap) McArthur had already murdered and dismembered 4 men.This is the reason why there must be regulations. There must be mandatory criminal record checks. Vulnerable sector checks a license scheme. Convicted criminals and convicted sex offenders use position as entertainer for access to children and the vulnerable and entertainers are self employed.