So who hired the guy?
Check this out:

South Africa’s government was confronted Friday with a new and chilling allegation about the bogus sign language interpreter at Nelson Mandela’s memorial: He was reportedly accused of murder 10 years ago.

Officials said they were investigating the revelation by the national eNCA TV news station. But they were unable, or unwilling, to explain why a man who says he is schizophrenic with violent tendencies was allowed to get within arm’s length of President Barack Obama and other world leaders.