PROTESTER THROWS BACK TEAR GAS CANNISTER AT POLICE IN RIO RIOTS

RJO01:BRAZIL-TELECOMS:RIO DE JANEIRO,29JUL98 - A protester throws back a can of tear gas fired by riot police near the stock exchange in Rio de Janeiro July 29, during a demonstration against the privatization auction of the national telecommunications monopoly Telebras. Police shock troops attacked demonstrators with clubs and tear gas, driving them back some 10 blocks from the stock exchange. Several people were injured during the violent exchanges. gn/Photo by Gregg Newton REUTERS