Hands point above head = need umbrella; Hands held over head = need helmet; Hands crossed over chest = enough supplies here.

Thai protesters are learning a whole new language, developed within days to coordinate among crowds of thousands of people at demonstrations that have swollen in defiance of a government ban and despite the arrest of many protest leaders.

Protests in Thailand have only grown despite a crackdown in which dozens have been detained. Two protest leaders were arrested on Tuesday on new charges just as soon as they were granted bail on previous charges.