It is the latter item, the service of alcoholic beverages that tend to lessen or remove inhibitions in many people, which is the frequent cause of problems for tavern and club operators. Rather, they rely on their servers, bartenders and management to handle any problems that occasionally arise. And this is sufficient for them.
Some establishments do, however, have a history of fights or violence.
These taverns or clubs often cater to a younger, more risk prone crowd. Deliberate overcrowding by management eager to make as much money as possible in an evening increases the risk of disorder or assault at such locations. The playing of pop music, especially by a live band, may also increase risk. These type establishments need security personnel, and sometimes security equipment. In each case, however, the establishment s management has a responsibility to use reasonable measures to provide a safe environment for its customers and employees.