Shoe flinging or shoefiti is the American and Canadian practice of throwing shoes whose shoelaces have been tied together so that they hang from overhead wires such as power lines or telephone cables.
A number of sinister explanations have been proposed as to why this is done. Some say that shoes hanging from the wires advertise a local crack house where crack cocaine is used and sold,in which case the shoes are sometimes referred to as Crack Tennies.
It can also relate to a place where Heroin is sold to symbolize the fact that once you take Heroin you can never leave: a reference to the addictive nature of the drug. Others claim that the shoes so thrown commemorate a gang-related murder, or the death of a gang member, or as a way of marking gang turf.
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