Good on 'em. Zionist are on the extreme edge and cast a pall on the more moderate followers of faith. Exactly like Islam extremists (eg ISIS), Xtian extremists (eg KKK), Hindu extremists etc. They terrorise the Palestinian population so fit the definition of terrorist. Worse than ISIS, they have nation state support. People like these Jews attending this conference need to take control of the state of Israel if it is to survive.
I believe most religious people are also secular ie they do not wish for any one faith to dominate and use dogma to enact laws. Israel needs to be secular as the Jewish religious state is obviously not working. The terrorist Zionist need to be removed from power and confronted eg reign in settler aggression by holding them to account, rather than provide IDF security legitamising their actions.