MARIKANA, South Africa — The police killing of 34 striking platinum miners in the bloodiest security operation since the end of white rule cut to the quick of South Africa's psyche on Friday, with searching questions asked of its post-apartheid soul. Newspaper headlines screamed “Bloodbath”, “Killing Field” and “Mine Slaughter”, with graphic photographs of heavily armed white and black police officers walking casually past the bloodied corpses of black men lying crumpled in the dust. The images, along with television footage of a phalanx of officers opening up with automatic weapons on a small group of men in blankets and t-shirts, rekindled uncomfortable memories of South Africa's racist past. Police chief Riah Phiyega confirmed 34 dead and 78 injured after officers moved in against 3,000 striking drill operators armed with machetes and sticks and massed on a rocky outcrop at the mine, 100 km northwest of Johannesburg. Phiyega, a former banking executive who was only appointed to lead the police force in June, said officers had acted in self-defense against charging, armed assailants at Lonmin's Marikana platinum plant. President Jacob Zuma, who cut short a visit to a regional summit in neighboring Mozambique to head to the mine, announced an official probe. “We have to uncover the truth about what happened here ... The inquiry will enable us to get to the real cause of the incident and to derive the necessary lessons too,” he said. — Reuters