BANGKOK (AP) — Myanmar has subjected Rohingya Muslims to long-term discrimination and persecution that amounts to "dehumanizing apartheid," Amnesty International said Tuesday in a report that raises questions about what those who have fled a violent military crackdown would face if they returned home. Since late August, more than 620,000 Rohingya have fled Myanmar's Rakhine state into neighboring Bangladesh, seeking safety from what the military described as "clearance operations." The United Nations and others have said the military's actions appeared to be a campaign of "ethnic cleansing," using acts of violence and intimidation and burning down homes to force the Rohingya to leave their communities. U.N.