In the news

This was my thinking.

Racism - ethnic background
Irreligious - anti religion (in the broad term)

Let’s bits confuse antisemitism with anti Zionism

Antisemitism is mostly considered a form of racism. I'm sure you will find people that disagree but they tend to be on the fringes. Wikipedia has a UN source for example.

Antisemitism is usually racist in its form though isn't it - you are more likely to suffer it if you look stereotypically Jewish, the prejudice is based on racist tropes at least as much or even more than religious hate.

But Jewish people who aren't religious still suffer it.

As I said above, it's legally classed as racism with Jews classed as a race due to a shared ethnic and cultural heritage.

Jewish is antisemitism rather than racism surely?

From a CofE upbringing I used think the same as I'd just fucked off my religion because it's all bullshit and thought similar of Judaism, but after listening to some people on here and as David Badiel said, Nazis ain't gonna care if you renounce your belief in God, if they consider you Jewish you're fucked, so racism.

If you ask the experts they combine all the bad stuff into one.

Here is a quote from Hitler that shows that religion was not much of an issue.

If international finance Jewry within Europe and abroad should succeed once more in plunging the peoples into a world war, then the consequence will be not the Bolshevization of the world and therewith a victory of Jewry, but on the contrary, the destruction of the Jewish race in Europe.
https://stevenlehrer.com/Hitler_threat.htm

Here is an interesting article about whiteness or race through history that show how much it changed, so you can't really use definitions from a few years of Youtube videos and project it on all of history.
https://www.theguardian.com/commentisfree/2023/apr/23/when-cleopatra-was-alive-she-wasnt-categorised-by-colour-of-her-skin