Police organizations have a quasi-military structure with uniforms, ranks and a command hierarchy. This style has been criticized for cultivating an "us vs. them" attitude and being too rigid. Police departments function as complex bureaucracies with specialized tasks divided among different bureaus. While this structure provides order, it can also lead to inflexibility and poor communication. Community policing aims to decentralize decision making to address these issues. New approaches like COMPSTAT and unions have also influenced police organization and accountability.