That's fair, though there was a lot of violence against Jews before this, things like the Hebron massacre, though they weren't terror attacks.

Also, I'd point out that the attack on the King David Hotel was widely condemned by almost all mainstream Jewish and Zionist organizations, including the official Porto-army of Israel which turned into the IDF, and including by Ben Gurion, Israel's first Prime Minister.

Btw, if you want a fact that's sure to wow people - I'm fairly certain that, to date, the KDH bombing was the deadliest terror attack in the Palestinian/Israeli territory. (Excluding October 7th, of course, which I'd personally categorize as an invasion, not as a single terror attack.)