Answer: Because of Jewish religious beliefs.
Step-by-step explanation:
After Judea fell under Roman rule, the Romans were tolerant of the conquered peoples. They even renovated the Jewish temple. Things in Rome itself have changed over time. All the conquered peoples had to pass the sacrifice to the statue of the Roman emperor. Such principles are strictly forbidden in Jewish religious practice; their religion is monotheistic. In such circumstances, the Romans responded by force and persecuted the Jews.