What can we do to protect ourselves?

Got to know from a friend that his brother lost his new car – Honda Civic recently!

Friend’s brother was on the way home and a Camry bumped into the back of his car. Without 2nd thought, his brother came down to find out what’s wrong. Few guys immediately punched his brother without any warning.  Within one minute, he lost his car but fortunately he wasnt hurted badly.

With the increasing rate of criminals, everyone is feeling unsecure even thought during day time.

I am wondering how much we can do in protecting ourselves? or we could just afford to pray for ourselves?