Rwandan story - the walk to Angola

I have a friend here whose family fled Rwanda at the approach of the RPF at the end of the genocide. With many others, they went into the Congo as refugees and kept walking to escape the RPF soldiers. They eventually ended up walking to Angola. With no prospect of settling there, they started to return and were eventually repatriated from Lubumbashi in the Congo by UNHCR.
Now my friend’s father is in prison, expecting to die there. The family visits him every week.