Forty years after his death, Ahmed Sékou Touré, the father of Guinea's independence, is more popular than ever. For young people across West Africa in search of a hero, Sékou Touré could be what they're looking for. But this rehabilitation of the country's past dictator glosses over the tens of thousands of deaths attributed to his regime, with access to the notorious Camp Boiro concentration camp now closed to victims' families. Our correspondent Sarah Sakho reports.