Answer is all of the above. The fact you're asking makes me think you're new to the scene and don't realise the number of fuckwits out there.

The number of people I am aware of that have been caught on camera after/during the following;
breaking into shop after hours
jerking off in reception area
hitting MLs
attempted rape
leaving the shop without tipping as promised
cancelling the EFT after pretending to send money directly to an MLs bank account
leaving the shop without his pants on because he didn't want to pay the tip

and those are just the things I can think of off the top of my head. In many of those cases the police got involved and CCTV was provided to them. So next time you think about making a dick move at a shop, remember that they have your mobile number and you're on CCTV.