White Cat stated for the record:
Harassment is a legal issue. Record of a persons wrongdoing is not the point of wikipedias articles. We are an encyclopedia not an archive. Wikipedia isn't about the truth. We are not the justice police.
This really isn't at all about protecting him. Because he is non-notable putting a slanderous article about him may lead to legal problems.
It's not slander if it's written down, and it's neither slander nor libel if it's true. Please stop throwing around legal terms you don't understand.