So, one day you happen to be walking down a street behind a guy carrying a tray of drinks and sandwiches, apparently hurrying to supply some office, an art gallery or something.
"Oh, the terrible tragedy of it all!"
But, suddenly the man trips, scattering the food across the sidewalk. He kneels and sobs tragically. His whole afternoon's work is lost, not to mention the ingredients and the delivery contract.
Sympathetic to the man's bad luck, you reach into your pocket and pull out a few bills. 'Tough luck. Hope you do better next time, mate.'
"Attracting a crowd (and my dog). How can we help?"
But stop for a moment and take a look at that food. The 'sandwiches' are just pieces of cheap white bread stuck together with a bit of butter or mayonaise. And the 'drinks,' if you could taste one, would be coloured water, I bet.
The food spilling manoeuvre must be pretty effective to make it worth all the trouble in preparation and the cost of the materials, although I bet the guy gets discarded bread, which he reuses over and over. Water's free and mayonnaise is cheap.
Another theatrical beggary I've noticed recently around Bogota are guys armed with shovels and hoes to give themselves an industrious, hard-working appearance. 'Give me money, since I'm ready to work, as you can see.' Sure, they look out of place amidst the cement and asphalt, which require a jackhammer instead of a shovel. But I imagine there's an unconscious psychological effect.
I've also seen more energetic version of this, in which a man stands by a pothole and industriously fills it - probably only to empty it again after you've past by.
Even if you don't feel sympathy, consider giving them a coin for ingenuity and acting.