He is described by his many enemies as Israel's most dangerous pyromaniac. 'He is a man who lives far away with a big box of matches, facing a huge keg of gunpowder which is Jerusalem,' says Ornan Yekutieli, a member of the city council.
One opposition leader is demanding that security police prevent Dr Irving Moskowitz returning to his home in Miami Beach in Florida so he can see the explosive consequences of what he has wrought in Jerusalem.
But for the Jewish settlers and their supporters in Ras al-Amoud, Dr Moskowitz is a hero.
This week, wearing a black skullcap, he nailed the mezuzah - the box containing a prayer - to the doorpost in one of two newly acquired villas in Ras al-Amoud, as is traditional in Jewish households.
The 11 Jews who sparked a crisis on Sunday by moving into the buildings in this Palestinian neighbourhood of Jerusalem unceremoniously moved out on Thursday evening, in line with an agreement reached between the government and Dr Moskowitz.
But some of their many supporters remained at the site, part of the deal that allows for 10 seminary students to stay on as security guards and workers.