He has topless photographs of his underaged niece, he had to hush his psychiatrist because her parents to her implied he molested her, he has chat messages about her "thinking I raped her" and openly admitted to showing her his naked body. You can go read the leaks right now if you want a source.
Ignoring the reliability of those claims, this thread is about allegations that government authority was misused. Do you have any links to examples of that?
Or you can read this highly editorialized version that takes some innocent things out of context, while openly displaying the worst with it (https://bidenlaptopreport.marcopolousa.org/report_viewer/#p=...)