Never should happen. Beef up security, and if you can’t, tell them to run at their own risk.
Via Times Of Israel:
Miri Michaeli, Europe correspondent for Israel’s Channel 10 news, tweets a troubling report from Paris.
The tweet reads, in Hebrew: “Chabad: Paris police order [us] to cancel most of our public [Hanukkah] candlelighting in the city, in light of the terror attack and the fear of additional attacks. Efforts [are underway] to approve a candlelighting at the foot of the Eiffel [Tower].”

