Standard Bank economist resigns after controversial Twitter comment

South Africa's Standard Bank said an economist who was suspended for a controversial tweet that prompted mostly black youths to march to the lender's offices in downtown Johannesburg has resigned. Chris Hart, a white, suggested on Twitter in January that more than two decades of black majority rule had perpetuated poverty and entrenched a tendency to blame whites for all of the country's ills. Hart was suspended by Standard Bank after his comments caused outrage on Twitter and its CEO Sim Tshaba