Resurrect Dead (2011)

[Dave Monroe]

http://www.resurrectdead.com/

An urban mystery unfurls as one man pieces together the surreal
meaning of hundreds of cryptic tiled messages that have been appearing
in city streets across the U.S. and South America.

http://www.imdb.com/title/tt1787791/

http://en.wikipedia.org/wiki/Resurrect_Dead:_The_Mystery_of_the_Toynbee_Tiles

Toynbee tiles

The Toynbee tiles (also called Toynbee plaques) are messages of
mysterious origin found embedded in asphalt of streets in about two
dozen major cities in the United States and four South American
capitals.

http://en.wikipedia.org/wiki/Toynbee_tiles