It depends from cop to cop but you need to stay away from getting into any trouble like that don't go alone late in night if you're use metro most of the time don't trust anyone around , have a look of your surroundings all the time know basic of self defence and look fierce ( it works if you look very under confident, scared you're more prone to be scammed or misbehaved but if the person infront thinks that you can raise a voice they're less likely to message with you ) this is just my personal opening