Their grievances were stoked by a young militant, Maulana Fazlullah, who set up an FM radio station in 2004 to appeal to the disenfranchised. The broadcasts featured easy-to-understand examples using goats, cows, milk and grass. By 2006, Mr. Fazlullah had formed a ragtag force of landless peasants armed by the Taliban, said Mr. Hussain and former residents of Swat.

At first, the pressure on the landlords was subtle. One landowner was pressed to take his son out of an English-speaking school offensive to the Taliban. Others were forced to make donations to the Taliban.

Then, in late 2007, Shujaat Ali Khan, the richest of the landowners, his brothers and his son, Jamal Nasir, the mayor of Swat, became targets.

After Shujaat Ali Khan, a senior politician in the Pakistan Muslim League-Q, narrowly missed being killed by a roadside bomb, he fled to London. A brother, Fateh Ali Mohammed, a former senator, left, too, and now lives in Islamabad. Mr. Nasir also fled.

Later, the Taliban published a “most wanted” list of 43 prominent names, said Muhammad Sher Khan, a landlord who is a politician with the Pakistan Peoples Party, and whose name was on the list. All those named were ordered to present themselves to the Taliban courts or risk being killed, he said. “When you know that they will hang and kill you, how will you dare go back there?” Mr. Khan, hiding in Punjab, said in a telephone interview. “Being on the list meant ‘Don’t come back to Swat.’ ”

One of the main enforcers of the new order was Ibn-e-Amin, a Taliban commander from the same area as the landowners, called Matta. The fact that Mr. Amin came from Matta, and knew who was who there, put even more pressure on the landowners, Mr. Hussain said.

According to Pakistani news reports, Mr. Amin was arrested in August 2004 on suspicion of having links to Al Qaeda and was released in November 2006. Another Pakistani intelligence agent said Mr. Amin often visited a madrasa in North Waziristan, the stronghold of Al Qaeda in the tribal areas, where he apparently received guidance.