Noise Digger

Most criminals carry out their illegal acts because  they think that they can get away with it.  If they realise that they are likely to get caught,  they run away as fast as they can.  So if you are troubled by a criminal and have nothing to hide,  make a loud noise, they will stop troubling you for some time at least.

If  you are attacked you should always create a noise.  Robbers always try to intimidate their victims, hoping they will keep quiet and not file a police complaint, so that they can continue robbing others.  A similar modus operandi has been adopted  by certain big companies to prevent publication of  facts.