If I am running a political position (government, city mayor, etc...), as much as I like to ban them, I won't do it because it will make us just as worse as they are: infringing on other people's right.
I won't ban them from coming to shopping at the store or if they are working in the same workplace.
NOW for my personal life and space (my home, property, family, kids, work office or cubicle), I will definitely tell them to take a hike or I'll file a complaint to the local authorities for them (dubs) to leave me and my kids the hell alone.