BANGKOK, Thailand — Women in several countries have begun sending their panties to Myanmar embassies in a culturally insulting gesture of protest against the recent brutal crackdown there, a campaign supporter said Friday.

"It's an extremely strong message in Burmese and in all Southeast Asian culture,'' said Liz Hilton, who supports an activist group that launched the "Panties for Peace'' drive earlier this week.

The group, Lanna Action for Burma, says the country's superstitious generals, especially junta leader Gen. Than Shwe, also believe that contact with women's underwear saps them of power.

To widespread international condemnation, the military in Myanmar, also known as Burma, crushed mass anti-regime demonstrations recently and continues to hunt down and imprison those who took part.

Hilton said women in Thailand, Australia, Singapore, England and other European countries have started sending or delivering their underwear to Myanmar missions following informal coordination among activist organizations and individuals.

"You can post, deliver or fling your panties at the closest Burmese Embassy any day from today. Send early, send often!'' the Lanna Action for Burma website urges.

"So far we have had no response from Burmese officials,'' Hilton said.