yangon protesters in myanmar on thursday marked two months since the military seized power by once more defying the threat of lethal violence and publicly demonstrating against the toppling of the democratically elected governmentthe february 1 coup has been met with massive public resistance that security forces have been unable to crush through escalating levels of violence including now routinely shooting protesters outside efforts including sanctions imposed by western nations on the military regime have failed to help restore peacein yangon the countrys biggest city a group of young people shortly after sunrise thursday sang solemn songs honoring the more than 500 protesters killed so far they then marched through the streets chanting slogans calling for the fall of the junta the release of deposed leader aung san suu kyi and the return of democracyprotests were also held in mandalay and elsewherethe demonstrations followed a night of violence including police raids and several fires in yangon several retail shops owned in whole or part by myanma economic holdings limited which is an investment arm of the military went up in flames the shops are the targets of boycotts by the protest movementthe crisis in the southeast asian nation has expanded sharply in the past week both in the number of protesters killed and with the military launching airstrikes against the guerrilla forces of the karen ethnic minority in their homeland on the border with thailand the un special envoy for myanmar warned the country faces the possibility of civil warthats a stark reversal for myanmar which prior to the coup had been making slow progress toward greater democracy following decades of brutal military rulein areas controlled by the karen more than a dozen civilians have been killed since saturday and more than 20000 have been displaced according to the free burma rangers a relief agency operating in the areain addition to those deaths an airstrike tuesday on a gold mine in karen guerrilla territory on tuesday left as many as 11 more people dead said a local news outlet and an ngo worker in touch with residents near the sitesaw kholo htoo the deputy director for karen teacher working group said residents told him five people were killed at the mine and another six at a nearby village the bago weekly journal also reported the attackdavid eubank of the free burma rangers confirmed that a video of the attacks aftermath showed the gold mine and that there had been airstrikes in the areaabout 3000 karen villagers have fled for safety in neighboring thailand in recent days but many have returned under unclear circumstances thai authorities said those displaced went back to myanmar voluntarily after a brief stay but humanitarian aid groups say they are not safe and many remain in hiding in the jungle and caves on the myanmar side of the borderthe un special envoy for myanmar christine schraner burgener warned wednesday that the country faces the possibility of civil war and urged the un security council to consider