The opposition alliance in Taiwan has appealed to its supporters to stay calm during today's mass rally at the Presidential Office, where they will protest against the re-election of Chen Shui-bian. On the eve of the rally, fears were running high that the event might turn violent. Premier Yu Shyi-kun and his Democratic Progressive Party colleagues yesterday appealed to Taipei Mayor Ma Ying- jeou - a prominent KMT member - to maintain public order today. The Kuomintang expects about 500,000 supporters to show up to their 'Fight for justice - save democracy' rally. Organisers plan to surround the Presidential Office to protest against what they call a 'rigged' election. Yesterday, KMT supporters from all over Taiwan were flocking to the capital to join the protest. Speaking at a press conference, Mr Ma said: 'There must not be any violence or we will lose the sympathy of the society. It is only with the society's sympathy that we can win our appeal [for a recount of votes].' Mr Ma said more than 1,000 police officers with water cannons were expected to maintain order. Meanwhile, a spokesman for the premier's office, Lin Jia-long said today's event was in danger of escalating out of control. Mr Lin's statements were echoed by DPP deputy secretary-general Lee Ying-yuan, who said the party had ordered its supporters to avoid provoking the 'blue' opposition alliance by waving their green party flags at the opposition event. Opposition leaders said the DPP's warning of violence was a ploy to discourage people from attending the event.