Celebrations over Songkran - the Thai new year - have been overshadowed by widespread grief after 21 people were killed on Saturday in clashes between the so-called red shirts and troops in Bangkok.<br /><br />Another 800 were injured on the bloody day.<br /><br />For more than a month, the protesters have been demanding the resignation of the Thai government and fresh elections.<br /><br />Al Jazeera's Tom Birtley reports from Bangkok. <br /><br />[April 13, 2010]
