A few weeks ago, a senior Greek Orthodox clergyman in Israel attended a meeting at a government office in Jerusalem's Givat Shaul quarter. When he returned to his car, an elderly man wearing a skullcap came and knocked on the window. When the clergyman let the window down, the passerby spat in his face.

The clergyman prefered not to lodge a complaint with the police and told an acquaintance that he was used to being spat at by Jews. Many Jerusalem clergy have been subjected to abuse of this kind. For the most part, they ignore it but sometimes they cannot.

On Sunday, a fracas developed when a yeshiva student spat at the cross being carried by the Armenian Archbishop during a procession near the Holy Sepulchre in the Old City. The archbishop's 17th-century cross was broken during the brawl and he slapped the yeshiva student.

There are an increased number at certain times of year, such as during the Purim holiday. "I know Christians who lock themselves indoors during the entire Purim holiday," he says.

Former adviser to the mayor on Christian affairs, Shmuel Evyatar, describes the situation as "a huge disgrace." He says most of the instigators are yeshiva students studying in the Old City who view the Christian religion with disdain. "I'm sure the phenomenon would end as soon as rabbis and well-known educators denounce it. In practice, rabbis of yeshivas ignore or even encourage it," he says.