Zionists believe that they have a right to settle on Palestinian land and expelling all the native Palestinians to create a Jewish-majority state that exists at the expense of them (more than half of Gaza’s population live below the poverty line) and even continue to terrorize them then (for example: https://www.aa.com.tr/en/middle-east/36-palestinians-killed-by-israeli-forces-in-west-bank-in-1-week/3018066). All of this is justified by nothing but their heritage.
Of course, as seen in this image, there are a lot of Jews that don’t want to be associated with such a genocidal ideology, and for good reason too (though antisemitic Zionists will still equate Judaism with Zionism).