I really need an advice.

First things first. I live in Germany, in a quiet neighbourhood. But there is a "settlement" near me and its getting crowded by arabs. There already report of break-ins. I think about some self-defence weapons. I've already got a pepper-sray but I am going to get some blunt weapons like a baseball bat. I really thought about to get a gun but its nearly impossible for me to get one legally. So /k/ can you give me any advices for a non-lethal weapon?

pic related.