You must not lose faith in humanity. Humanity is like an ocean; if a few drops of the ocean are dirty, the ocean does not become dirty.
A vibrant civil society can challenge those in power by documenting corruption or uncovering activities like the murder of political enemies. In democracies, this function is mostly performed by the media, NGOs or opposition parties.
No fundamental social change occurs merely because government acts. It’s because civil society, the conscience of a country, begins to rise up and demand – demand – demand change.