> the ostensible motive of the government is to serve its people
Your conclusion doesn't seem to match your usage of "ostensible". Yes, /democratic/ governments claim to serve its people, but do not necessarily do so. You should always be suspicious and critical of your government in an effort to ensure that the stated goal and actions are aligned. You should always be treating your government as adversarial. In fact, if you read a lot of the writings of people influential to the founding of the US you'll find that they were explicitly trying to design a system where they say its biggest adversary was itself.
But also, there are plenty of governments that do not even pretend to serve its people. They are completely self-serving and transparent about that fact. You never know when one is going to turn into the other but often going from ostensibly benevolent to explicitly malevolent is relatively mild, but gaining back freedom usually requires a lot of bloodshed. There's always exceptions, but this is common. The wort part is that people frequently vote in the malevolent leaders. Democracies can turn into autocracies without spilling a single drop of blood. I'm unaware of the reverse ever happening.
But also, there are plenty of governments that do not even pretend to serve its people. They are completely self-serving and transparent about that fact. You never know when one is going to turn into the other but often going from ostensibly benevolent to explicitly malevolent is relatively mild, but gaining back freedom usually requires a lot of bloodshed. There's always exceptions, but this is common. The wort part is that people frequently vote in the malevolent leaders. Democracies can turn into autocracies without spilling a single drop of blood. I'm unaware of the reverse ever happening.