I already had meeting with employment attorney and confirmed it was illegal harassment and it caused harassing working environment.

I was confused by your precious questions which proved now may be unnecessary. The definition about harassment is not on the harasser's motivation which is totally irrelevant, like Colorado killer, He can explain there was no motivation or the motivation as joke. However, it is the consequence counts. The killing is crime regardless if the killer has malicious motivation or not. The harassment is illegal because the victim feels insulted and harassed and causing negative impact to work to the victim.

I was not asking if this is harassment which I already confirmed. Please do some research before giving others advices, otherwise, it's really misleading.