1. Zhang Dejun’s behavior was self-defense. According to Article 63 of my country's Criminal Procedure Law: "Citizens who fall under any of the following circumstances may be immediately transferred to the public security organs, people's procuratorates or people's courts for handling: (1) They are committing a crime or are discovered immediately after committing a crime." Therefore, in this case, the defendant Zhang Dejun’s behavior of chasing the deceased Hu Yuanhui and Luo Jun with his car was in compliance with the law and was a legal and legitimate act.
2. The fact that the robber violated the law comes first. Zhang Dejun did not directly cause his injuries during the pursuit, so Zhang Dejun does not bear any responsibility.
3. In a country governed by the rule of law, public relief is advocated in criminal cases and private relief is not advocated, otherwise it will be passive and embarrassing. Those who act bravely should also act within the framework of the law and cannot exceed the provisions of the law.
Write from the above three perspectives.