Nigerian protesters vandalise MTN head office in Abuja

By Paul CarstenABUJA (Reuters) - Nigerian protesters vandalised the head office of South African mobile phone giant MTN in Abuja on Thursday in apparent retaliation for anti-Nigerian violence in South Africa, a witness and an MTN spokesman said.The attack came after a Nigerian youth body threatened to shut down South African businesses after shops believed to be owned by immigrants in the capital Pretoria were looted.Protesters stormed the regional head office of MTN - the biggest South African