While you can't entirely prevent theft, you can reduce the likelihood of its occurrence. Purchases and cameras should never be left in open view to tempt a thief. And, of course always lock your car. When you are travelling, ask your neighbours to pick up your mail and newspapers. When neighbours help each other, signals are not left for burglars that a home is vulnerable to theft.
Neighbours developing a strong sense of community is one step towards creating a safe society.
Call the police if you suspect a crime is being or has been committed. You don't have to have hard evidence. The police will determine if there is a problem. Call if you suspect burglary, child abuse or vandalism - the police need and want your assistance. And never hesitate to seek help if you have been a victim of crime.