Is a movement avowedly seeking a home for one race necessarily racist? Given the persecution many Jews faced in the late 19th century in Europe, it was more about a place of safety. Obviously attitudes to Arabs (and others) would now be considered racist.
I wouldn't have thought many Zionists were fascist by most definitions (most were far more to the left). Even those who wanted an alliance with Nazi Germany in WW2 were motivated by distrust of the British.
Plenty of very prominent Jewish people thought it was a fascist undertaking from the beginning.