It seems like it's time to start learning self-defense yourself. What else? The authorities won't always help, and it won't take long to harm a person, so you need to figure it out on the spot. Carry a taser and a can of pepper spray.
I guess governments have arm forces who can protect citizens and their properties. government is the highest authority that can handle insecurity in any country because they know what to do to stop those crime that is making to people commit crime that will bring insecurity to the country.
Nobody want to live where there is no peace or security in the society, because they know important of security to humanity which is the responsibility of the government to provide security for people living in a geographical area.