Donor organizations to the Palestinian Authority have been challenged for years to prevent their well-intentioned contributions from being directed towards hate promotion by the PA, its institutions and its NGOs. 
This advertisement is another example of the misuse of UN funding. An ad by a Palestinian youth organization, PYALARA, which is funded by UNICEF, shows an axe destroying a Star of David. The UNICEF logo is right on the ad. The large Star of David that has been destroyed has on it pictures of stars and stripes, presumably representing the USA, and an additional smaller Star of David.
