pCan Mexico rise to the occasion? There's been a collective call for justice after the disappearance and murder of student activists in the southern state of Guerrero. In a nation that's all too used to brutal rampages, the discovery of 34 charred corpses in a mass grave seems to confirm what survivors and gang member suspects claim: that police in Iguala were in cahoots with local drug lords to quash protests for better teaching practices.