JOHANNESBURG, South Africa - Watch your back in South Africa. They kill folks here. Murder them at a bewildering rate. Robbers kill their victims, bystanders kill criminals, family members kill each other. Gunbattles erupt on streets and in shopping malls. Passers-by whip out pistols and join in firefights between criminals and police or security guards. A recent flurry in high profile bloodshed even has police suggesting they are losing the fight with violent crime. Plans for South Africa to host soccer's next World Cup, in 2010, has focused international attention on the crime rate, with organizers having to answer questions...