The graves are not yet full

My mentor: One of the refugee camp directors, whom I called "Teacher" out of respect.
"Martin Luther King has been killed," Teacher said, with a pained voice and vacant eyes. I looked towards Teacher, wondering: "Who is Martin Luther King?" I was a 13-year-old refugee in the West African nation of Nigeria, a land then called Biafra. Martin Luther King. What did that name mean?

 Eight out of 10 Biafrans were refugees exiled from their own country. Two years earlier, Christian army officers had staged a bloody coup killing Muslim leaders.