I think it is easy for Invisible Children and other self-aggrandizing foreigners to make the entire story of the last 30 years of Northern Uganda about Joseph Kony, but there is a history of the relationship between the Acholi people and the central government in Kampala that is a little more complicated than that. Kony is a grotesque war criminal, to be sure, but the Ugandan government currently in power also came to power through the use of kadogo (child soldiers) and fought alongside militias employing child soldiers in the Democratic Republic of Congo, something that Invisible Children seem wilfully ignorant of.
By blindly supporting Uganda's current government and its military adventures beyond its borders, as Invisible Children suggests that people do, Invisible Children is in fact guaranteeing that there will be more violence, not less, in Central Africa.
I have seen the well-meaning white person do plenty of damage before, most notably in Haiti, so that is why people understanding the context and the history of the region is important before they blunder blindly forward to "help" a people they don't understand. Bill Clinton thought he was "helping" in DRC in the 1990s and his help ended up with over 6 million people losing their lives.