Al Jazeera aired a documentary March 27 on the mistaravim, discussing their mission and secret operations. Plenty of videos on the mistaravim can also be found on YouTube .

On Oct. 7, the mistaravim could be clearly seen in confrontations between the IDF and Birzeit University students , and again at demonstrations near the Beit El settlement in northern Ramallah.

The mistaravim are increasingly intervening at the entrances to Palestinian cities and near Israeli settlements, points of friction between both sides.

During the recent Israeli-Palestinian confrontations in the West Bank and Jerusalem, media outlets have filmed what appear to be armed civilians arresting and handing Palestinian demonstrators over to the Israel Defense Forces. These men, called mistaravim , wear Arab clothing to look like Palestinians as they carry out undercover missions against and sometimes kill Palestinians wanted by the IDF.

Imad Hussein, a leading figure in the West Bank demonstrations, told Al-Monitor, “The mistaravim turn from civilian Palestinians into Israeli soldiers carrying small pistols within seconds. After capturing the demonstrators they want, they put on hats with ‘police’ written in Hebrew. During the recent demonstrations, while the youth were throwing stones at the soldiers, they were shocked to see several masked men shooting at them. Those turned out to be mistaravim.”

Palestinians accumulated important information about the mistaravim during the first and second intifadas. Mistaravim speak Arabic fluently. They are hard to identify in the masses during the clashes, since people cover their faces with scarves or shirts, for fear of being captured by IDF cameras and subsequently arrested.

Photojournalist Ibrahim Jumaa told Al-Monitor, "The mistaravim work undercover among Palestinians. They encourage them to throw stones, advance and attack the soldiers. They also provide the demonstrators with drinking water, and then, all of a sudden, they attack them. I have seen them more than once pointing a gun at the demonstrators near the Qalandia checkpoint in the outskirts of Jerusalem, and in Ofer near Ramallah, and shooting them a few seconds before the soldiers arrive.”

Recently, the mistaravim have taken to standing in the front rows of demonstrators, yards away from the Israeli soldiers at the entrances of West Bank cities. The mistaravim throw stones at the soldiers and take shelter behind large barricades from the tear gas and rubber bullets. But then, suddenly, they step away from the demonstrators, pull out pistols and fire at them. The mistaravim arrest people as the soldiers join them and pull the demonstrators into military vehicles.

Al-Monitor met with Abdul Hadi, a pseudonym for a Palestinian who was arrested recently by the mistaravim. "While I was among the demonstrators on the outskirts of Jerusalem, six armed men in civilian clothes and having Arab features attacked us. We learned later on that they were among us for more than an hour, until it was time to capture three youths. I survived, miraculously, along with two others, after the demonstrators continued to throw stones at the mistaravim," he said.

The mistaravim undergo intensive training that is different from that of ordinary Israeli soldiers. They learn to master the Palestinian dialect and customs. Sometimes they disguise themselves as elderly Palestinians or street vendors.

Calm usually precedes their entry at demonstrations. The soldiers withdraw a bit and the tear gas and rubber bullets pause. The mistaravim subtly surround the demonstrators in cooperation with the army, and when the soldiers advance again in the front, the mistaravim wait in the back for the retreating demonstrators.

Maha al-Husseini, spokeswoman for Euro-Med, expressed to Al-Monitor “serious concern about the Israeli army’s extended utilization of the mistaravim in the ongoing confrontations in the Palestinian territories."

Husseini said, "This is because their operation is illegal and violates the principle of distinction between civilians and combatants, which is prohibited under international humanitarian law, because the Israeli soldiers’ disguise in civilian clothes would endanger the civilians. Moreover, the mistaravim’s mission is to collect information, carry out killings and kidnappings or disperse demonstrators.

"The way they arrest Palestinians is very violent and is considered a deception, and the detainee suffers brutal and unjustified beating.”

The Palestinian Information Center, an official Hamas website, posted an article Oct. 8 to raise awareness among demonstrators of how to protect themselves from the mistaravim. The article advises demonstrators to wear light colors, as the mistaravim wear dark and loose-fitting clothes to hide their weapons. It said protesters should tuck in their shirts because the mistaravim wear their shirts untucked to cover their pistols. The site also recommended that demonstrators move in small groups during confrontations so they can recognize each other and identify strangers.

The mistaravim pose a real challenge to the continuation of Palestinian demonstrations in the West Bank. They are arresting the best and most active demonstrators and sowing suspicion and mistrust among Palestinian youths, allowing the IDF to kill several birds with one stone.