Their actions can be deceptive. They manipulate people and situations, coerce citizens and are dishonest. They are encouraged and rewarded for their practices. Police officers often lie to suspects about witnesses and evidence. They are deceptive when attempting to learn information about criminal activity. Most of these actions are sanctioned, legal and expected. While police officers are allowed to be dishonest in certain circumstances, they are also expected to be trustworthy, honest and maintain the highest level of integrity. To do their jobs effectively, police officers lie. They use deception, manipulation and coercion to obtain information. Police officers often tell those suspected of committing crimes that they have physical evidence implicating the suspect when no such evidence exists. They tell suspects that they have witnesses who have identified or implicated the suspect, knowing full well that the witness does not exist. Officers will tell suspects that a polygraph proved the suspect was lying when the officer knows the polygraph did not indicate deception or was inconclusive. Police officers will hide their identities and even deny being police officers while trying to obtain evidence. Some of these practices are justifiable, others may create ethical concerns, and some go beyond the law or ethical policing. Police officers abuse their power when involved