The Palestinian were in Palestine, minding their own business, since they were not foolish enough to anger the Romans.
But your question is foolish because the Jews never did have a homeland in Palestine, and were given land by the Romans around 100 BC.
The Jews had been beat by the Babylonians and Assyrians over 800 years earlier.
Then the Persians had it for 400 years.
Then Alexander the Great ruled there.
Then it was Seleucid.
Then it was Hasmonean.
The Jews in Palestine were the put into power by the Romans after they beat the Hasmoneans in 63 BC.
Look it up, Herod was a Roman who converted to Judaism in order to quell sectarian violence.
But then around 66 BC the Jews rebelled and were defeated utterly.
{...
In 66 CE, the
First Jewish-Roman War, also known as the Great Jewish Revolt, erupted. The war lasted for four years and was crushed by the Roman emperors
Vespasian and
Titus. In 70 CE, the Romans
captured the city of Jerusalem and destroyed both the city and the
Second Temple.
...}