It sounds like The Constant Gardener
The subject is the malfeasance of international pharmaceutical companies and government bureaucracies.
The film stands head and shoulders above the typical action dramas that these days have become little more than elaborate chase and crash sequences. Here the quest takes us into the consideration of soul and the moral quagmire that arises when money and power take precedence over the value of human life. And right in sync with the global trends of this era, The Constant Gardener depicts the gap between the rich and the poor and the lengths to which the mighty will go to cover up their rampaging corruption and ethical rot.
After returning to Kenya, the diplomat keeps discovering more information about the circles of deceit surrounding Dypraxa. In a telling scene, he has traveled to a remote village where food is being distributed to starving Africans. A marauding force of vicious men on horseback gallop through the place killing men, women, and children with wild abandon. The point is made that the poor are constantly the victims of violence, whether their oppressors are global corporations or murderous bands of tribesmen. They are viewed as worthless commodities by their own country's leaders and by the other governments who have no qualms about making a profit on their suffering, especially if it means jobs and political capital at home. The Constant Gardener is a watershed work that exposes the shadowy parameters of a new war that is animated by corporate greed and political amorality.