"Speak-easies" were basically back door bars. Speak-easies were opened because the Volstead Act made the distribution of any intoxicating drink illegal. By 1925 (only about 5 years after Prohibition began) there were over 100,000 speak-easies opened in New York City alone. One of many speak-easies still stands. Today it is called the "21 Club". Which is located 21 West 52nd Street. Where they will give a tour of the old speak-easy which is still intact.
One reason why so many Speak-easies were allowed opened was because of the lack of enforcement. There were not enough federal agents or police to prevent liquor from entering the country. With only 1,550 federal agents and the east coastline and the Canadian-American borderline it's no wonder that they managed to impound 5% of smuggled liquor. Also the illegal liquor business came to the control of the mob, which overpowered most police. Not only that but also most bootleggers (people who made their own liquor) bribed federal agents, police, or anyone else who was trying to enforce the Prohibition law.
You see most Prohibitionists hoped that Prohibition would decrease drunken ness and the crime rate. Well at first the crime rate did have a minor drop but it didn`t wait long to sky rocket to nearly twice that of the pre-prohibition period. Serious crimes such as homicides, assault, and battery increased and have never returned to pre-prohibition levels. These crimes