Is jewish an ethnicity?

[Beth]

In the 80s, the US Supreme Court ruled that Jews are a race, but only for the purpose of classification for certain anti discrimination laws. It really angered a lot of Jews. However, most Orthodox Jews believe that if a Jewish man has children with a non Jewish woman, those children are not jewish, as their bloodline is believed to be matriarchal. It's not strictly a Religion, because almost 50% of Jews in Israel claim to be secular or non religious, and if it's a religion and they don't practice, then that would eliminate their Jewishness. I guess the answer is: nobody knows, and everyone has their opinion. It's more than a race, religion, culture and nation etc. best to just leave it as "complicated".