Luckily, union membership is widespread in Sweden and they'll most definitely help you with this.

Fun fact: managers have their own union in Sweden as well! ("ledarna", literal translation: "leaders") And as the other commentator mentioned, you'd most probably lose your position as the company if you participate in bullying, and if your union finds out, you'll most likely get kicked out of the union as well.

This is called mobbing and you will get removed from manager position ASAP if someone can collect slightest proof (in EU)

Not happening. Not unless said manager wants to be in a whole lot of trouble.