They are designed to deter criminals by making them think twice about signing up as volunteers, he said.

By being visible, they deter criminals, police officials say.

It does not appear to deter criminals, as supporters often suggest.

But so far it has not measurably deterred juvenile criminals.

The main way to deter potential criminals from committing a crime was through the example of offenders suffering.

They said prisons were already harsh, and making them harsher would not deter criminals.

That's why I believe that the criminal justice system should be tough enough to protect local people and deter criminals from offending.

Rather, they say that just the knowledge of their being armed would deter criminals.

But her failure did nothing to deter outside criminals from their own forays.

I will continue to work to deter and punish violent criminals who use guns.