I live in the city. In a pretty decent neighbourhood (Oostelijk Havengebied), but I still don't understand what open spaces have to do with this. We've got tons

I live in the city. In a pretty decent neighbourhood (Oostelijk Havengebied), but I still don't understand what open spaces have to do with this. We've got tons of open spaces around here, all of them very safe. Police response or lack of it has nothing to do with open spaces.