Almost all power is like that. Power comes from the ability to do violence (or threaten/imply it) and there's only so much guns and ammo you can carry. Not to mention the attacker has the advantage here and full-body ballistic protection would be too cumbersome and still wouldn't stop an IED. I mean, the IRA mortared Downing Street and that was 1990s tech.
To amass enough violence to control large numbers of people, you need to incentivize other people to apply violence for you. Dictatorships are more honest in this regard - they reward such subservients with the opportunity to abuse others for pleasure and material benefit.
Democracies OTOH tell people that we're all better off if the system works and anyone upsetting it hurts everyone so it's everyone's best interest to "pacify" them.
You're right that many people are very submissive though and just do what they are told even it it harms them long term. Usually the forcing mechanism is other people would punish you if you didn't punish the person you are supposed to. I mean, most of the cops who hunted down Luigi benefited from the CEOs death, yet they still did it. Because the benefit is too indirect and delayed and the punishment for getting caught not doing your job on purpose is immediate and direct.
I still object to the term leader because they don't lead, they tell people what to do. Not all leadership has to be be example but it implies some participation in the activity, its benefits and its dangers. Modern politicians are too well-shielded from the reality of working people.