AFP / South Asia August 20, 2013 Myanmar has strongly denied previous accusations of ethnic cleansing A Rohingya girl stands near the Bawdupa IDP camps outside of Sittwe August 11, 2013. Photo- Reuters Myanmar must address anti-Muslim propaganda and stamp out a culture of impunity for religious violence or risk “catastrophic” levels of conflict, a rights group warned Tuesday. Physicians for Human Rights described attacks on Muslims, that have swept the country since fighting first broke out last year as “widespread and systematic,” in a report examining unrest that has killed around 250 people and left tens of thousands homeless. The US-based group said that while the situation in the country currently appeared calm, a failure to properly investigate and deal with the causes of the tensions risks further clashes. PHR reported that “the brazen nature of these crimes and the widespread culture of impunity in which these massacres occur form deeply troubl