BANGKOK  Addressing the nation three weeks after a military crackdown on protesters, Prime Minister Abhisit Vejjajiva presented what he called a “letter to the Thai people” on Thursday, calling for reconciliation in a country shaken and divided by months of turmoil and scores of deaths.

“It’s time to rebuild our home together,” he said. “Hatred and vengeance can’t build our future.”

The prime minister’s speech introduced a five-point road map to “national reconciliation,” although he did not explain it in detail. The plan, as he described it earlier, seeks to address social and economic disparities that are at the root of Thailand’s divisions.

It also seeks to control the news media, which the government asserts instigated much of the recent turmoil. It will discuss constitutional reform, uphold the honor of the monarchy, and investigate the violence that killed at least 88, he said.

The prime minister made it clear that these steps were only a beginning and that he understood that Thailand’s problems ran deeper than the confrontations in the streets that ended May 19. “The process, I have always said this, will take a long time and will outlive this government,” he said in his address.