One thing that people cannot avoid is being in danger. You could just be walking happily in your streets when suddenly someone approached you, someone unfamiliar, someone really strange and someone really dangerous. Even if they are not talking, they are just standing from your behind you can already sense danger and when you are in that situation you cant do anything about it already and just do your best to out in that situation. And when you say you get out of the situation is get out alive and you are not hurt by the bad person.
People say that the best way for you not to encounter some trouble or to be in danger is to be at home but even at your home, sometimes danger will be the one to come at your home. Home used to be the safest place for you but now the only place is safe is wherever as long as you know how to defend yourself. Any place could be dangerous but if you know how to defend yourself properly from harm then this will turn out to be a safe place because you do not have to worry about your safety because you can handle yourself. Click link for more info.
You can learn martial arts if you want to protect yourself because martial arts is the best way to protect yourself. But martial arts does not work all the time because there are times when the bad person has its weapon to hurt you, you can use martial arts to disarm them but just to be sure is you can buy yourself a self defense weapon just in case of emergency when he is being more violent. It will scare away the bad person if that person sees you holding a weapon and remember that as long as the person is not doing something to hurt you, never hurt them first because you are not a bad person, you are just trying to defend yourself. Simply click for more.
Defending yourself does not meant that you have to harm as well. Your main goal is just to scare them away so you can get out of the situation. Always make yourself safe by having a self defense weapon all the time wherever you go. And presence of mind is also a must when you are in danger. Your presence of mind can still be the best weapon to fight against danger. If you do not have it, your weapon and skills in martial arts is useless. Visit https://en.wikipedia.org/wiki/Self-defense for other references.