He was responding to a speech given by Thaksin to supporters for the Songkran holiday. The speech was broadcast on a satellite television station on Saturday.
"Now is the time for Thai people to issue demands and ask for presents from Thaksin because he and his family have been taking so many things from the country over the past 10 years," Mr Chavanond said.
When Thaksin said the country was experiencing unrest because some people did not respect law and order, the problem actually stemmed from his refusal to follow every law. Thaksin chose only to obey laws that he could exploit, he said.
"Thaksin should not talk about the genocide in Rwanda. He should take a look at himself because many activities are being carried out to discredit the country and defame the monarchy.
"As a present for the Thai people, I ask Thaksin to stop destroying the country and order his sister [caretaker Prime Minister Yingluck Shinawatra] to respect the law, and the country would then be at peace," said the Democrat spokesman.