It's not about Israel. That's just an excuse.
If you want to really understand where Rep. Omar is coming from, enjoy a few minutes of anti-Semitic ravings from this Detroit Imam.
On January 27, 2019, an antisemitic lecture by Michigan-based Shi'ite Imam Bassem Al-Sheraa was uploaded to the YouTube channel of the Al-Zahraa Islamic Center, which is in Detroit.
That means stuff like this.
Following the [Babylonian] captivity, when Nebuchadnezzar exiled them and destroyed the Temple, the Jews said: 'Money and women are our most powerful weapons.'...
"So they would amass gold and money, and they would spread usury. Usury constitutes a peculiar Jewish philosophy... Even in the modern world, global banks are based on the culture of usury, which is a Jewish concept.
As Rep. Omar would say, it's all about the benjamins.
These are commonplace beliefs within the Muslim sphere. And also the leftist sphere.
"What is the worldly religion of the Jew? Huckstering. What is his worldly God? Money. Money is the jealous god of Israel, in the face of which no other god may exist... The god of the Jews has become secularized and has become the god of the world." Karl Marx