Which form of Judaism -- hasidic, orthodox, traditional, conservative, reform, reconstructionist, humanistic/secular -- represents real Judaism today?
Would you say that reconstructionist or reform Jews observe the same central tenets as orthodox Jews?
That doesn't even begin to address that it was instituted by God Himself.
Which of these forms of Judaism did God institute?
Persecution of Jews, on the other hand, is not a Christian doctrine.
Can we not universalize this to say persecution of anyone is not a Christian doctrine? By singling out Jewish people you make it into a specialized "hate crime" category.
Judaism has its different flavors through the years. Today is no exception.
One might mention sadduccess, pharisees, essenes, qumran community, etc., etc.
Judaism, like Christianity, is "denominational."