In UK law, adults have a duty of safeguarding of children and vulnerable adults from abuse or risk of abuse. Abuse has half a dozen categories including the catch all sexual abuse, so slightly different interpretation to California Joe, but similar outcome. The level of sexual abuse, from viewing images in the abstract to rape are for the judge and jury but the issue starts at a safeguarding level.
With regard to Rolf Harris, I too will wait for justice to take its course. He is a bit of a hero musically, (Stairway to Heaven anybody? ) and in later years as a UK television presenter has become part of most families by association. Hence the stunned shock, regardless of whether we are judging old standards etc.