Witnesses say the protesters carried banners criticizing the U.S. for interfering in Burma's internal affairs.
Earlier this month, China and Russia vetoed a U.S. - proposed security council resolution urging Burma to release all political prisoners and speed up progress toward democracy.
Burma's military government reacted to the measure by accusing the United States of plotting to replace it with a puppet government.
The United States and other nations have often criticized Burma's military rulers for their human rights record and failure to hand power to a democratically elected government.
Information for this report is provided by AFP and AP
