- U.N.: Persecution of Myanmar's Rohingya minority could be crime against humanity
- Yet revered human rights icon Aung San Suu Kyi has been notably quiet on their ordeal
- Human rights bodies criticize her for her perceived failure to speak out on their behalf
- Others are more forgiving, say she faces complex challenges in bid to become president
Having endured nearly 15 years of house arrest with grace and courage, Aung San Suu Kyi has earned a reputation throughout the world as a political superstar of rare moral stature.
But for some, mostly from outside the country but also from within, the aura surrounding Myanmar's most famous daughter has dimmed in recent years.
"I think everyone agrees now she has been a disappointment when it comes to human rights promotion," said David Mathieson, Human Rights Watch's senior researcher on Myanmar.
The Nobel Peace Prize winner's glittering international reputation means that visiting dignitaries still clamor for a meeting since she emerged from detention in 2010 and set about pressing her case to become the next president of post-reform Myanmar. "Everyone that arrives in Rangoon (Yangon) expects to get a photo op," said Mathieson. "They all want that Suu Kyi photo on the mantelpiece."
But for some observers of Myanmar's emergence from nearly half a century of authoritarian military rule, the 68-year-old's perceived failure to speak out against rising violence towards the mainly Buddhist country's Muslim Rohingya minority is grounds for criticism.
HRW executive director Kenneth Roth was withering in a recent report: "The world was apparently mistaken to assume that as a revered victim of rights abuse she would also be a principled defender of rights."
Aung Zaw, editor of Myanmar news magazine The Irrawaddy, said that while she remained popular among Burmese, Suu Kyi had eroded some of her domestic support in recent years.
Her failure to speak out on ethnic issues and the communal violence that had wracked the country was "shocking," he said, and had been met with disappointment in quarters of the country's ethnic communities.
"People expected her -- as she is a Nobel Peace Prize winner -- to say a few words to stop the bloodshed," he said.
Ethnic conflict has been a recurring feature of Myanmar's political landscape since it gained independence from Britain in 1948.
But following the 2011 transition from military rule to quasi-civilian governance, the country has witnessed a significant spike in violence targeting Muslims, with Buddhist extremists blamed for fanning the flames of hatred.
The Rohingya -- a Muslim minority concentrated in impoverished Rakhine state in the west of the country -- has borne the worst of it, prompting the U.N.'s Special Rapporteur on Myanmar, Tomas Ojea Quintana, to declare this month that the recent persecution of the group "could amount to crimes against humanity." Myanmar presidential spokesman Ye Htut told CNN the government rejected the remarks.
Myanmar's most persecuted minority
The Rohingya -- regarded by many in Myanmar as interlopers from neighboring Bangladesh -- are de jure stateless due to their lack of official recognition as one of the country's 135 ethnic groups. During the controversial recent national census, the country's first in 31 years, officials forbade respondents from identifying as Rohingya, drawing international criticism.
The Rohingya face "very, very strong" antipathy throughout the country, according to Georgetown University expert David Steinberg, being subjected to restrictions on marriage, employment, health care, education and movement, and are the only group in the country barred from having more than two children.
In 2012, outbreaks of communal violence in Rakhine -- home to an estimated 800,000 Rohingya -- left hundreds dead, the majority of them Muslims. The bloodshed displaced huge populations from their homes into squalid camps, where 140,000, mostly Rohingya, remain, completely reliant on humanitarian aid supplies that are increasingly being restricted.
In March, Doctors Without Borders -- the largest NGO healthcare provider in Rakhine -- was banned from operating in the state, where it had worked for more than 20 years, because officials accused it of providing preferential treatment to Rohingya. Weeks later, international aid workers were driven from the state during rioting by Buddhist-led mobs angry at the aid workers' perceived support for the Rohingya, a development Quintana warned would have severe consequences for the 140,000 within the camps, and