It is against Jewish law for Jews to pray on the Temple Mount. This is based not on Moshe Dayan's s0-called 'surrender' on the issue, but on Jewish religious law and beliefs. Which also preclude Jews attempting to build a third temple on the site. This small extremist Jewish group does not accept Halachic rulings and tries to get onto the Mount to pray. The police should prevent them, as they are breaking state law and in the process merely inflaming the other side.
from the article: Israel fears violence following arrest of Islamic Movement head