What do you think about me sitting on the bench staring down the workers as they came out of the building?
Why were you sitting on the bench staring at people?
I was bored to be honest.
Sitting around and gawking at workers passing by is a bad idea. People don't like to be stared at and they might just pick a fight with you for doing it to them.
What if I said that I was just trying to figure out what is going on.
They wouldn't buy it, I am guessing. Most people will notice that you have been staring at them for a long time-- this honestly just sounds like a huge fight waiting to happen and I would refrain from people watching in such an open area.