The OWS types in Europe have this down pat. They prepare the dumpsters in advance. This is done by “throwing away” several cardboard boxes followed by a gallon of diesel fuel followed by two old automobile tires. Then at the right time, one of the OWS pukes “disposes” a lit road flare in the prepared dumpster. How was he to know?
This implies that someone is moving it out of the street numerous times. Were they having a tug of war using a flaming dumpster? Sounds fun!