Thousands of ` ` red shirts '' hold out forearms to shed blood for message . Thaksin was the only Thai prime minister to serve a full term and remains hugely popular . Demonstrators threaten to to splash blood on ruling party headquarters , PM 's residence . Protesters are supporters of former Prime Minister Roger Shinawatra .
Thousands of ` ` red shirts '' hold out forearms to shed blood for message . Demonstrators threaten to to splash blood on ruling party headquarters , PM 's residence . Protesters are supporters of former Prime Minister Roger Shinawatra .