Final answer:
Police generally have the authority to remove someone from a licensed premises if they have reasonable suspicion of criminal association, but their powers are bound by law and can differ based on jurisdiction and circumstances.
Step-by-step explanation:
The statement that police have the authority to come into a licensed premises and remove someone they believe to be associated with a gang is generally true, but it would depend on the specific circumstances and the laws of the jurisdiction in question. Law enforcement has duties to uphold the law and maintain public safety, which may include entering premises where criminal activity is suspected. However, their powers are bound by legal standards, such as the requirement for reasonable suspicion as established in Terry v. Ohio. If police officers have a reasonable suspicion that the person has committed or is about to commit a crime, they may take action within the scope of their authority. Furthermore, during historical periods such as the end of Prohibition, police power has been used to enforce regulations on licensed premises, sometimes using controversial and discriminatory enforcement practices.