Because you're effectively describing what amounts to a life sentence. The courts should determine someone's reintegration plan and what consequences they should suffer, this goes beyond what the sentence was.
If you mean that Googling a name and finding an accusation as a fact then think again, many such accusation are exaggerated or false. Also keep in mind that people share the same name and it happens that they live in close proximity (they may be related) so you may get your "facts" wrong when googling me but finding out that my cousin was in a fight 20 years ago or had an unpopular opinion back then.