Why does nobody care about the genocide in Congo?

In less than 10 years, 4,000,000 have died in the DRC (Democratic Republic of Congo) and now the fighting threatens to erupt once more in the Eastern regions of that country. Why doesn’t anybody care about stopping this genocide? Here is a report from France24 English language news.
 
When you combine this slaughter with the slaughter that earlier occurred in Rwanda, 5,000,000 have died in about 15 years. Add in the killings in Uganda, and the figure goes still higher. Instead of solving this mass war, the US instead is provoking new wars in the Horn of African countries of Eritrea, Ethiopia, and Somalia!