He's saying hello wildcats because he's apparently in Utah. I went to the high school in Utah that had wildcats as their team. My guess is he was somehow involved with the school.
People are entitled to know if they live near a sex offender or if somebody they know is a sex offender or a criminal. That's why it's legal and always will be to make this stuff public.
is rehabilitation not one of the standpoints of imprisonment? is it not true that if you are forever treated as a criminal you will be less likely to rehabilitate into a functioning member of society? is it fair that if you break a law (or are suspected of such) that it is publicized and you are forever entombed in your previous failures?
only release the info of repeat offenders or probable repeat offenders. it also stands to reason that situations where knowing said person was an offender would prevent further attacks would be few and far between, limited to the insane