The move comes as a result of increased attacks on Christians by Muslims over the past few months. The families said they wrote letters to Palestinian Authority Chairman Mahmoud Abbas, the Vatican, Church leaders and European governments complaining about the attacks, but their appeals have fallen on deaf ears.
According to the families, many Christians have long been afraid to complain in public about the campaign of "intimidation" for fear of retaliation by their Muslim neighbors and being branded "collaborators" with Israel.
But following an increase in attacks on Christian-owned property in the city over the past few months, some Christians are no longer afraid to talk about the ultra-sensitive issue. And they are talking openly about leaving the city.
"The situation is very dangerous," said Samir Qumsiyeh, owner of the Beit Sahur-based private Shepherd TV station. "I believe that 15 years from now there will be no Christians left in Bethlehem. Then you will need a torch to find a Christian here. This is a very sad situation."
Qumsiyeh, one of the few Christians willing to speak about the harsh conditions of their community, has been the subject of numerous death threats. His house was recently attacked with fire-bombs, but no one was hurt.
Qumsiyeh said he has documented more than 160 incidents of attacks on Christians in the area in recent years.
He said a monk was recently roughed up for trying to prevent a group of Muslim men from seizing lands owned by Christians in Beit Sahur. Thieves have targeted the homes of many Christian families and a "land mafia" has succeeded in laying its hands on vast areas of land belonging to Christians, he added.
Fuad and Georgette Lama woke up one morning last September to discover that Muslims from a nearby village had fenced off their family's six-dunam plot in the Karkafa suburb south of Bethlehem. "A lawyer and an official with the Palestinian Authority just came and took our land," said 69-year-old Georgette Lama.
The couple was later approached by senior PA security officers who offered to help them kick out the intruders from the land. "We paid them $1,000 so they could help us regain our land," she said, almost in tears. "Instead of giving us back our land, they simply decided to keep it for themselves. They even destroyed all the olive trees and divided the land into small plots, apparently so that they could offer each for sale." When her 72-year-old husband, Fuad, went to the land to ask the intruders to leave, he was severely beaten and threatened with guns.
"My husband is after heart surgery and they still beat him," Georgette Lama said. "These people have no heart. We're afraid to go to our land because they will shoot at us. Ever since the beating, my husband is in a state of trauma and has difficulties talking."
The Lamas have since knocked on the doors of scores of PA officials in Bethlehem seeking their intervention, but to no avail. At one stage, they sent a letter to Abbas, who promised to launch an investigation.
"We heard that President Mahmoud Abbas is taking our case very seriously," said Georgette Lama. "But until now he hasn't done anything to help us get our land back. We are very concerned because we're not the only ones suffering from this phenomenon. Most Christians are afraid to speak, but I don't care because we have nothing more to lose."
The couple's Christian neighbor, Edward Salama, said the problem in the city was the absence of law and order. "We are living in a state of chaos and lawlessness," he said. "The police are afraid of the thugs who are taking our lands."
Salama expressed deep concern over the conditions of Christians in Bethlehem, noting that many were leaving the country as a result of the deterioration.
"When I see what's happening to Christians here, I worry a lot for our future," he said. "They are targeting Christians, because we are seen as weak."
The Lamas said they decided to go public with the hope that the international community would intervene with the PA to halt the land-grab. "We will fight and fight until we recover our land," Fuad Lama said. "We will resort to the courts and to the public opinion for help.
"Unfortunately, Christian leaders and spokesmen are afraid to talk about the problems we are facing. We know of three other Christian families - Salameh, Kawwas and Asfour - whose lands were also illegally seized by Muslims."
A Christian businessman who asked not to be identified said the conditions of Christians in Bethlehem and its surroundings had deteriorated ever since the area was handed over to the PA in 1995.
"Every day we hear of another Christian family that has immigrated to the US, Canada or Latin America," he said. "The Christians today make up less than 15 percent of the population.
People are running away because the Palestinian government isn't doing anything to protect them and their property against Muslim thugs. Of course not all the Muslims are responsible, but there is a general feeling that Christians have become easy prey."