The Trump administration claims that the US border patrol agents were acting with reasonable force.
特朗普政府声称美国边境巡逻特工当时是合理使用武力。
英语百科
Right of self-defense
The right of self-defense (also called, when it applies to the defense of another, alter ego defense, defense of others, defense of a third person) is the right for persons to use reasonable force or defensive force, for the purpose of defending one's own life or the lives of others, including, in certain circumstances, the use of deadly force.