The heavy crackdown shows Saleh still wants to preserve his 33-year rule.
Hundreds of soldiers loyal to Yemen s embattled president stormed a protest camp in a southern city on Monday and fired on the crowds indiscriminately, killing at least 20 people, according to medical official and witnesses.
The city of Taiz has been a hotbed of anti-government protests since crowds began calling for President Ali Abdullah Saleh s ouster in early February.
