Rubbish piled up on the streets of Burma’s (also known as Myanmar) main city on Tuesday after activists launched a “garbage strike” to oppose military rule as the toll of pro-democracy protesters killed by the security forces since a Feb. 1 coup rose to more than 500. Security forces shot and killed one man in the southernmost town of Kawthaung as they cleared the streets, the Mizzima news portal reported, and one person was killed in the northern town of Myitkyina, a relative of the 23-year-old victim told Reuters. Police and a junta spokesman did not answer calls seeking comment. Burma has been in turmoil since the army ousted an elected government led by Nobel laureate Aung San Suu Kyi, reimposing military rule after a decade of tentative steps towards democracy. At least 512 civilians had been killed in nearly two months of protests against the coup, 141 of them …