by Mariëtte Le Roux and Lina Vanegas © Agence France-Presse Bogota, COLOMBIA (AFP) — Colombians go to the polls Sunday in a deeply polarized election that could see a leftist — and ex-guerrilla — become president for the first time in the history of the violence- and inequality-plagued country. A year after a brutal security crackdown on street protests fueled by deepening socio-economic woes, many voters are pinning their hopes on former Bogota mayor Gustavo […]