If Zionism is racism as you think then Palestinian nationalism is racist too.
Don't act dumb.
You know perfectly well how the political ideology of Zionism developed.
Thousands of years in the diaspora showed that Jews could never be safe for long term in any country that wasn't their own homeland. Pogroms, Inquisitions, Genocides, Incredibly restrictive anti-Jew laws, etc.
It is debatable of course whether Jews are safe in Israel. But having a strong IDF helps. In any case, Israel exists and it isn't going anywhere unless of course it's enemies succeed to in their genocidal goals.