This is the weird Muslim sect that was making headlines around the world because they had been kicked out of their homes and no other country would take them.
The story was presented in isolation, as if for some strange reason these poor people (only women, children, and old men were shown in the press coverage) were being treated so badly, possibly for reasons involving racism.
"Rakhine" state in Myanmar is in the western part of Myanmar,along the border with Bangladesh ("bangla-desh" = "bengali-land" where Bengalis are an ancient nation (2500+ years of history))
Many Bengalis converted to Izlam during Turco-Mongol rule (14th to 18th century) but a sizable hindu population remained
During British colonial times Bengalis were sent to Rakhine state and many remained. At the same time the British split up the Bengalis into hindus to the west (West Bengal) and Muslims to the east (East Bengal) -- later East Bengal became part of Pakistan and remained part of Pakistan until 1971 when the west Pakistanis committed genocide against their muslim brethren and Bangladesh fought and gained independence)
Anyway, so the Bengalis in Rakhine state aren't natives but the Muslims among them started calling themselves Rohingya. The Myanmarese call them "Bengalis"
They are all Sunni Muslims (the Hindus and Christians don't call themselves Rohingya) and now they are a sub-sect of Sunnis call Wahabbis -- Saudi version of Sunni Islam - the Saudis, thanks to money gained by selling oil to the west have funded the spread of Wahabbism in Afghanistan (Taliban, Al Qareda), Somalia (Al Shabab), nigeria (Boko haram), Palestine (Hamas), Pakistan, Indonese, the USA etc.