What is community-based harassment/cause stalking?

I googled it and this is what I found... not sure how accurate... but here it goes... Community-based harassment is a grown-up version of school yard bullying.

Multiple individuals within a community participate in the harassment and stalking of a single individual. However, rather than attack a victim physically, techniques are used to undermine a person psychologically. This can be far more damaging than a physical attack because not only is it very hard to prove, but it is extremely traumatizing for the victim. (Also known as cause stalking or gang stalking).

You might also be on a listing for Violent Persons. There is a list you can get placed on without knowing it. Look up Violent Person Registry. It's on the Gang Stalking World site.