FILE - In this April 7, 2015, file photo, a military police officer aims his gun to a demonstrator during a protest in Brasilia, Brazil. The officer had picked up a bottle that was thrown towards them but did not fire his gun and backed away. Thousands of workers have staged rallies in 12 cities across Brazil to protest against a proposed law that would allow companies to outsource their labor force. (AP Photo/Eraldo Peres, File)