Shortly after 9:00pm (1400 GMT), Thaksin's image appeared on several large video screens at the demonstration site, setting off enthusiastic cheering by his supporters.Organisers said Thaksin taped his speech in London, where he maintains a residence.
The protest on Friday also drew other opponents of the current military-installed government who do not like Thaksin but would like to see a quick return to democracy.
Thaksin's appearance was a direct challenge to the government that replaced him and which has made clear to the mainstream media that he should not be given publicity.
Thaksin's video speech, which began with a litany of complaints that he had been treated unfairly by his successors, came after he suffered two strong blows against his legacy.
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