Video on Burma
Did you know that Fort Wayne Indiana has the largest population of Burmese anywhere in North America? They are mostly from the Karen and Mon ethnic groups. Consequently journalists in Fort Wayne have done a lot of research on the Burmese people. One journalist produced an excellent video that provides background on the country of Burma and insight into the struggles that the people of Burma face. Although not specifically about the Karen (who are largely from a Christian background) it will help you understand a bit more about where the Karen refugees have come from.
The link is below.