A man has been jailed for life for the “barbaric” murder of a disabled barrister living rough in Canterbury in what a judge described as a “gratuitous and humiliating punishment beating”. Sobantu Sibanda, the son of a university lecturer and a social worker, was told today (January 18) he will have to serve at least 19 years for the “callous and extremely violent” killing of “highly intelligent, well-travelled and proud” 51-year-old Guy Malbec before he can be considered for parole. Mr Malbec, who had qualified in law but never practised, was beaten to death in the early hours of Easter Sunday…