Why some people throw a pair of shoes over ropes that cross the streets in many cities?

Question

Why some people throw a pair of shoes over ropes that cross the streets in many cities?

Answer 1

It's an advertisement to let you know that someone is dealing illegal drugs at that corner.

Answer 2

To show drug houses and gang turf

Answer 3

http://www.snopes.com/crime/gangs/sneake...

There are many explanations. I personally think that kids do it for fun. Try the link to read about the legend.