 The arrest of South African former president Jacob Zuma is throwing some cities into chaos. Pro-Zuma protests that started on Friday spilled into Johannesburg today, as shops were looted and sections of a major highway was closed. Stick-wielding protesters marched through the streets of the city with sporadic acts of violence in the country's main economic hub. The arrest had mainly been concentrated in Zuma's home province of Quazulu-Natal until Saturday.