Jews are an ethnic group, not a religion. (Even if traditionally most members of that ethnic group followed a particular religion, many don’t now).
Ethnoreligious...to be precise.
https://churchlifejournal.nd.edu/articles/zizek-has-a-lot-to...
https://www.youtube.com/watch?v=2UOM3C3q7II
Zizek is certainly a madman, being both an atheist christian and a marxist in our day and age