Two recent commentaries on the potential Casino in Downtown Hamilton provide a good review of the pitfalls of urban casinos and their potential negative social effects.
Raise the Hammer: http://raisethehammer.org/article/1703/casinos_and_low-income_households:_research_review
Hamilton Spectator opinion piece: http://www.thespec.com/opinion/columns/article/837578–a-casino-will-make-hamiltonians-sick-with-addiction-and-money-crises