Thailand's "Red Shirt" protesters remained defiant today in the face of mounting pressure from the battered tourism industry to end mass demonstrations seeking to topple the government. <br/><br/>The Red Shirts have vowed to stage their biggest rally on Saturday since their latest round of protests began with more than 100,000 supporters on March 14. <br/><br/>Tourist industry workers plan their own peaceful rallies tomorrow seeking an end to the action by supporters of fugitive ex-premier Thaksin Shinawatra seeking snap polls. In another rally against the mass protests, faculty members of Chulalongkorn University also plan to dress in pink and gather in a show of anti-violence tomorrow. <br/><br/>According to officials, the tourism industry has suffered billions of dollars of financial losses in the past few years because of political unrest and foreign visitor arrivals are down 20-30 percent from last year. <br/><br/>But Red Shirt leader Jatuporn Prompan rejected the estimated financial losses as over exaggerated. Jatuporn reiterated that Prime Minister Abhisit Vejjajiva's offer to call elections by the end of the year, one year ahead of schedule, would not be enough to bring the Red Shirts back to the negotiating table.<br/>