Minneapolis-In the manslaughter trial of a former Minnesota police officer, the prosecutor showed the jurors the difference between her pistol and taser, trying to raise a question, namely, an experienced man How the police officer confuses these two weapons in the Daunte Wright shooting.

The trial resumed on Tuesday, and the testimony focused on the police department’s use of force policies and procedures, and the accused officer Kim Porter must abide by these policies and procedures.

Wright, 20, was stopped and killed on April 11 in the Brooklyn Center, a suburb of Minneapolis, due to the expired license plate label and the air freshener hanging on the rearview mirror. Porter, 49, was charged with manslaughter.

Porter, a 26-year police veteran, resigned two days later. He tried to prevent Wright from leaving and returning to his car because the police tried to arrest him for weapons. Porter is white and Wright is black. His death occurred when Derek Chauvin was tried in nearby Minneapolis for the death of George Floyd, and it caused several nights of angry protests in the Brooklyn Center.

The defense called the shooting a terrible mistake, but also claimed that Porter had the right to use lethal force against Wright because he might have dragged another police officer at the time. Mychal Johnson and his car.

On Tuesday, Judge Regina Chu dismissed two motions filed by the prosecutor. An opinion aimed at limiting witnesses who are not testifying as experts. This happened after Johnson testified last week that Porter's actions were authorized under state law. Johnson did not testify as an expert on the use of force by the police.

"I will not prevent any officer from testifying. Based on their training and experience, lethal force or the use of taser is appropriate in this situation," Zhu ruled from the bench without the presence of a jury.

Zhu also rejected the prosecutor's request to ask the police about union membership. They argued that Porter had held positions in the union, including as president, which made her more respected among her colleagues. They wanted to question the police officer about this so that the jurors could assess any potential prejudice against Porter.

Zhu said she rejected the motion because Porter no longer has any contact with the police union and the witnesses who testified "it is impossible for her to be biased to testify for her because of her position."

Garrett Flesland, the commander of the Brooklyn Center Police Department, testified on Tuesday about the department’s policy and requirements for the use of force against candidates, stating that officers must take an oath. The policy stipulates that the basic duty of a police officer is to serve the community, and Fleisland said: "I believe this is the core of our work. We serve and protect."

He said that police officers must be able to make effective decisions under pressure, and Porter knows these policies, even though they have been evolving over the years.

On Monday, senior agent Sam McGinnis of the State Criminal Arrest Bureau testified that Porter’s watch belt had a holster and required deliberate action by the police officer to release the weapon. The holster has a snap button, and the taser holster has a lever. McGinnis said the black pistol is twice as heavy as the yellow Taser.

McGinnis testified that the Taser and the gun have different triggers, grips and safety mechanisms. He said that the Taser also has a laser and LED light that can be displayed before launch. He showed this to the jury, but the pistol does not.

McGinnis also testified that Porter did not perform a functional test on her taser at the beginning of the shift. Although the policy of the Brooklyn Central Police Department is that the police should do this, McGinnis admitted under cross-examination that he did not check the degree of compliance by the police in the department.

The prosecutor asked the jurors to use the Taser, but after Porter's lawyer objected, Chu did not allow it. Zhu said that jurors can do this during the deliberations.

Earlier Monday, Hennepin County Assistant Forensic Doctor Loren Jackson testified that Porter’s bullet injured Wright’s heart and lungs and caused his death. He said that people can only survive this kind of injury in "a few seconds to a few minutes."

After Wright was shot, his car drove away and a few seconds later collided with an oncoming car. Jackson said that in terms of what caused Wright's death, any damage caused by the crash was insignificant.

The jurors saw images of Wright's body at the scene, because the assistant forensic doctor found the body on the ground, some medical equipment was still attached to the rescue work, and some dried blood from gunshot wounds.

They also saw photos of the autopsy, which Chu restricted the autopsy after Porter’s lawyers objected to the trial earlier. Wright's mother was present in most of the testimony because the autopsy photos showed that she did not appear in court.

The case was tried by a jury composed mainly of white people.

State sentencing guidelines require a sentence of more than 7 years in prison for first-degree manslaughter and 4 years in prison for second-degree manslaughter, but prosecutors said they plan to extend the sentence.