How to protect/prevent being the target of cybermobbing

I just read an eye opening, awful article about organized cybermobbing. About groups that target people for years, send police to their homer, drug addicts and so on.

My question: How to protect against these kind of attacks?

Context: As a person who needs to be somewhat public for their job. Because, sure the easy answer would be: Everything pseudonym on the internet, but sadly that is not possible for my job.