Harassment and bullying are never acceptable or excusable.
"It really is never just one bad actor that ruins things in any community. It's on to the people around them — you and me — to either shrug and let their shit slide, or do our best to counteract it."
https://www.readonlymemo.com/one-rotten-fan-can-spoil-a-community-but-only-if-we-let-them/

