To answer this question, I am going straight to the earliest first-hand eyewitness information that tells us what the first Christians thought about this. In the 30s of the first century, did they believe Jesus was a violent nationalistic revolutionary zealot?
The eyewitness is of course Paul, and the clue is right here in his own words:
On the contrary, in Maccabees (the earliest known use of the word “Judaism”) IOUDAISMOS is not a religion per se; but rather that "Judaism" is a broader agenda to which Israelites may, or may not, be loyal.
So, 2 Maccabees 8:1-5 characterises “Judaism” as a reaction to the profaning of the temple, the destruction of Jerusalem, the oppression of the people and blasphemies against God’s name.
It's worth adding a couple of points about content in the gospels: Jesus has one named zealot among his disciples ('Simon the Zealot') but the function of the gospel narratives is to repeatedly show how all kinds of people, such as Simon, are en masse de-converted away from their own values to adopt the values of Jesus. And even in the one outbreak of violence by a disciple, where Peter cuts off a man's ear, this is actually a conflict between fellow Jews - it's not an attack on a Roman but on a Jew who represents the temple elite. It's not insurrection against Rome. It doesn't even amount to a civil war among Jews. But time and time again we see the gospels portray Jesus crying out in frustration against fellow Jews but never once against a Roman.
Even the story of Peter cutting off a man's ear is told to show Jesus stopping the violence. (It's important to remember that the meaning of a text comes from its function, not just from its content.) In Israel, a country in which some groups felt a simmering resentment against the Roman occupiers, this story of Jesus was ideal for telling again and again in every decade to show that there is another way forward apart from violence.
And so, in some of his last known words, Paul shows how he has left his past behind him, writing these words:
'Bless those who persecute you; bless and do not curse. Rejoice with those who rejoice; mourn with those who mourn. Live in harmony with one another. Do not be proud, but be willing to associate with people of low position. Do not be conceited.
Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everyone. If it is possible, as far as it depends on you, live at peace with everyone.'
And if you turn to the gospels, you will find words like those quoted from the mouth of Jesus. Because that is the side that Paul had gone over to.