Anti-goverment protesters perform their Friday prayers on the street leading into the New University area in Sana’a, Yemen, March 18, 2011. GLENN GUAN/The Star (Yemen)

Anti-goverment protesters chanting slogans with yellow playcards that reads “GO OUT” during a demonstration demanding the resignation of President Ali Abdullah Saleh in Sana’a, Yemen, March 18, 2011. GLENN GUAN/The Star (Yemen)

A wounded anti-goverment protester being carried to a temporary hospital setup at a mosque near the square in Sana’a, Yemen, March 18, 2011. Snipers open fire at anti-goverment protesters after the friday prayers. GLENN GUAN/The Star (Yemen)

Helping the wounded: Anti-goverment protesters being treated at a temporary hospital setup at a mosque near the square in Sana’a, Yemen, March 18, 2011. Snipers open fire at anti-goverment protesters after the friday prayers. GLENN GUAN/The Star (Yemen)