Even as police/security, they are not permitted to go out and kill people. They can act in a lethal manner if their life is in immediete danger, just like you o

Even as police/security, they are not permitted to go out and kill people. They can act in a lethal manner if their life is in immediete danger, just like you or I can as normal citizens. That is not unique. The CEO of Securitas cannot decide to kill you and have his henchmen go do it. The leaders of governments can and do act like that.