This bothers me, for two reasons.
1. According to halacha the grave of a Jew must be marked. Treading over the grave of a Jew, particularly of a kadosh (hero), is a sign of disrespect.
2. Graves must be marked so that a Cohen should not inadvertently approach it.
Already in 1967 the Religious Affairs Minister appointed a committee which prepared a survey on the desecration of the Jewish Cemeteries in Hebron. Despite the shocking findings presented to the minister, no government action was taken towards renovating the site.
Only the persistent, independent, voluntary activities of Professor Ben-tzion Tavgar brought about the cemeterys renovation. This holy work was accompanied all along the way by harassment and disturbances from Military Government personnel. These tried to prevent the grapevines and vegetables in the cemetery from being uprooted, and tried to stop the removal of the Arabs who broke into the cemetery and did as they wished.
Even after the cemetery was renovated, Jewish burial within it remained forbidden, until the burial of the infant Avraham Yedidya Nachshon, whose mother was determined to bring him to rest in the Hebron cemetery.
Even then, army officers and soldiers were sent to block the path of the infant and its mother to the cemetery.