Only the gospel has the power to effect real and lasting change so that innate animosities are forever removed. We do not just commit sin, sin is at the core of our very being. It is our nature to sin. Of all the things there are on this earth, only the Gospel of Jesus Christ can deal with our sinfulness and bring lasting peace.
In the third world in general and Uganda particularly, there are many, many needs. It is our desire to be used of God to meet as many needs as we can with His help. Yet, we must always remember, that first and foremost, our mission is a matter of the human heart, a matter of redemption from sin in Christ.
It is certainly true that wherever Christian missionaries have gone, not only have they planted churches, but have also built schools, medical facilities, orphanages, provided clean water, and done many other benevolent acts that impacted the people. In fact, many people have "seen" the gospel worked out in this way before they were able to hear it. They learned that the gospel is not just a ticket to heaven when you die, but changes individual lives, families, whole villages, and even a nation.
The danger is for the compassion in a Christian's heart to gradually lose sight of the changing of the human heart through the redemptive work of Christ. Then the focus becomes the redemption of the outward, physical changes that relieve people of suffering. Overtime, the mission become a "social gospel" that seeks to save society or even worse, "liberation theology" which sees all human suffering not in terms on human sin, but one class of people oppressing another and that their salvation is found in liberating them.