
He invited all elements of society who want a "real democracy, not a sham one" to come out and join the protest by his supporters.
[Watch Thaksin speaks in video clips: Part 1, Part 2, Part 3, Part 4]
He called on his supporters all over the country to come out in full force to act like a tsunami "to drive away the aristocracy and make Thailand a complete democracy".
"We have to mobilise people in full force. We don't need to care anyone any more," he said.
He compared his overthrown government to a person who was snatched of his belonging, saying that now it was time to demand for that to be returned.
And Thaksin repeated his readiness to come back and lead again.
"If you my countrymen tell me to get back to work, I will do it even though it means hard work at the age of 60," he said. "I will return and tackle the problems. I will do magic for you."
And he expressed confidence that he could "slip in at any time" although he is wanted by authorities as a fugitive convict in a corruption case.
In the meantime, Thaksin insisted that he remained loyal to His Majesty the King, adding that he believed the King did not want to get involved with politics.
The fugitive ex-leader said that he had no intention of destroying the institution, as had been alleged by his political enemies.
He accused "people around the palace" of plotting the 2006 coup with the military to overthrow his government. He said that those people should not interfere with politics as it was not an intention of His Majesty the King.
He repeated his claim that Privy Council president Prem Tinsulanonda and another royal adviser Surayud Chulanont had interfered with politics.
Thaksin was speaking to his red-clad supporters gathering outside Government House. His speech, believed to be broadcast through a video linkup from overseas, began shortly after 8 pm and lasted a little over an hour.
He made his speech with the Thai flag in the background and the message "Thailand Needs Change" in the foreground.
Thaksin also blamed the ruling Democrat Party for the ongoing political conflict.
He said the Democrats failed to follow the rules and gained political power through unusual means, with the help of the military, the People's Alliance for Democracy, and lately the Friends of Newin faction.
He criticised the way the government is dealing with the economic problems. While portraying the Democrat-led administration as lacking the efficiency in dealing with the economic crisis, Thaksin gave himself credit for strengthening the Thai economy while he was in power.