What is a common tactic used by defense attorneys when an officer is testifying?

A common tactic used by defense attorneys when an officer is testifying is asking leading questions. This technique involves framing questions in such a way that they suggest a particular answer or guide the witness towards a specific response. Leading questions can be effective for the defense as they can help to challenge the credibility of the officer’s testimony or highlight inconsistencies in the officer’s account of events. By using leading questions, the defense can influence the narrative being presented in court, potentially creating reasonable doubts about the prosecution's case.

The other strategies mentioned do not typically serve the same purpose in a courtroom setting. Using humor to lighten the mood might be inappropriate, as courtroom proceedings generally require a serious tone and demeanor. Distracting with irrelevant evidence can be seen as a means to confuse the jury rather than effectively challenge an officer's testimony. Making factual statements, while important, does not directly address the defense's goal of dissecting the officer's credibility or reliability in their testimony.