The brutalities endured by Burma’s Rohingya—the country’s most vulnerable population—were bad even before the recent coup. The US response must take their plight into account, or risk making it even worse.

Bangladesh is building one of the world’s largest refugee camps to house the hundreds of thousands of stateless Rohingya people fleeing Myanmar. Here’s what you should know about what the UN Refugee Agency calls the fastest-growing refugee emergency in the world today.