I m no expert in that field. Probably better than you think since the police has access to a lot of tools to find you and been an harasser doesn't mean you have the technical skill to be anonymous enougth.
We are now in an endless debate. Internet isn't the problem. Bad behaviours, uneducation, missinformation, fake news, etc are the problem.
Blaming internet won't solve those. And they will be ready for the next tool.
In my country, I can open a police report for online harassment.