The Zealots were a group of revolutionaries prevalent in Palestine during the public ministry of Jesus. They were aggressive against the Roman rule. Their hatred of Rome later led to a fight against the Romans. The Roman army counteracted and destroyed the city and Temple of Jerusalem in 70 AD.
Jesus was a spiritual revolutionary, and his fight was against sin and Satan. According to Jesus, when we are free from sin, God will protect us. Christians do not use force for the conversion of others to become Christians. Our enemy is not human, but Satan and his agents.