ພວກປະທ້ວງ ທີ່ ສະຖານີ ລົດໄຟ Rio
![A woman covers her face to protect herself against tear gas used by police during a protest against a bus fare increase in Rio de Janeiro, Feb. 6, 2014.](https://gdb.voanews.com/c1d41fc4-2b45-4073-bca5-c59aecbf9762_w1024_q10_s.jpg)
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A woman covers her face to protect herself against tear gas used by police during a protest against a bus fare increase in Rio de Janeiro, Feb. 6, 2014.
![A firework explodes as members of the "Free Pass" movement invade the Central Train Station to demand zero tariffs in the Brazilian public transport system in Rio de Janeiro, Feb.6, 2014.](https://gdb.voanews.com/33e85881-3dd2-4187-887a-23b7f21b4e32_w1024_q10_s.jpg)
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A firework explodes as members of the "Free Pass" movement invade the Central Train Station to demand zero tariffs in the Brazilian public transport system in Rio de Janeiro, Feb.6, 2014.