Tammany Hall wasn't the Irish Mafia ? The Irish Mafia started out at FIVE POINTS , long before the Tammany Hall, Dems took over .
Go see " THE GANGS OF NEW YORK ", when it comes out ; the book is far too difficult for you to read and comprehend, dear. :-) Of course, that movie won't really give you all that you need to know, but it just might be a start. LOL