[dropcap]S[/dropcap]outh Africa’s Supreme Court of Appeal on Friday more than doubled the sentence imposed by a lower court on Oscar Pistorius, a double-amputee Olympic sprinter convicted of killing his girlfriend, Reeva Steenkamp, in his home in February 2013. The case, evoking questions about racial fears and violence against women, transfixed South Africa’s tangled, post-apartheid