Malaysia's national tourism agency promotes the country as "a bubbling, bustling melting pot of races and religions where Malays, Indians, Chinese and many other ethnic groups live together in peace and harmony." Malaysian Prime Minister Najib Tun Razak echoed this view when he announced his government's theme, One Malaysia. "What makes Malaysia unique," Mr. Najib said, "is the diversity of our peoples. One Malaysia's goal is to preserve and enhance this unity in diversity, which has always been our strength and remains our best hope for the future."

If...