Protesters returned to the streets in low-income suburbs of Brazil's biggest city Tuesday to demand better education, transport and health services, one day after President Dilma Rousseff proposed a wide range of actions to reform Brazil's political system, AP reported. Police said at least 500 people blocked streets for several hours in a peaceful protest in the districts of Capao Redondo and Campo Limpo on the outskirts of Sao Paulo. At the same time, police in Rio de Janeiro were looking for a looter who killed a police officer after a protest on Monday. Police said eight people, including the police officer, were killed in the Nova Holanda slum in a clash with demonstrators who had looted stores and robbed bystanders. "We think the people who are most interested in the demands being made in the street demonstrations of the past several days are those who live in these kind of suburbs," said Guilherme Boulos, one of the leaders of Tuesday's protests. So far, Brazilian protesters don't appear appeased by Rousseff's proposals, which shifted some of the burden for progress onto Brazil's widely loathed Congress by calling for a plebiscite on political reform lawmakers will have to approve. The divided Congress would likely struggle to take any quick action on such a plebiscite. Protesters have filled cities to air a wide spectrum of grievances including poor public services and the high cost of hosting next year's World Cup soccer tournament and the 2016 Olympics. About 100,000 people are expected to march in the city of Belo Horizonte Wednesday before Brazil plays Uruguay in the semifinals of the Confederations Cup. City officials have declared a holiday in Belo Horizonte, and authorities say they are expecting confrontations with demonstrators.