we're all criminals here

We were working at a school, painting classrooms; one supervisor, two groups. I was sanding down a door in one room, two boys rushed in, asked if it had been searched. I didn't know what they meant at first then watched as they opened every cupboard and drawer, stuffing their pockets with whatever they could find. Only pencils and post-its available but they took them anyway. I was scared we would all get blamed. The two boys did not give a F*** they used the post-its to decorate the windows in the bus on the way back to base. The supervisor, over her shoulder as she drove the mini bus asked where they got the stuff from, no one answered... My first stupid thought was 'they are just criminals' my second was 'we are all criminals'. My third, that some people were going to learn a lot about crime...