Jesus's followers for sure.
Show me where Scripture tells us they were there (I've actually not really studied that aspect of that event).
But there were different kinds of "Jesus followers" up until the Cross (then many gave up).
Quoting N.T. Wright:
The first two elements of Jesus's perfect storm are comparatively easy to describe; the third less so, but all-important if we are to understand both the original meaning of Palm Sunday and the meanings that it might have for us as we draw nearer to the cross in this holiest of weeks.
Rome
To begin with, the storm sweeping in from the west. The new social, political and (not least) military reality of the day, the new superpower - Rome. Rome had been steadily increasing in power and prominence over the previous centuries. Until thirty years before the birth of Jesus of Nazareth, Rome had been a republic. But with Julius Caesar all that changed. His ambition, and then his assassination, threw Rome into a long, bloody civil war, from which Caesar's adopted son, Octavian, emerged as the winner.
Octavian took the title "Augustus," which meant "majestic" or "worthy of honour." He declared that his adopted father, Julius, had become divine - this meant that he, Augustus Octavian Caesar, was now officially "son of god" or "son of the divine Julius." The word went around the world which Rome was quickly conquering: Good news! We have an emperor! The Son of God has become King of the world!
After Augustus's death, he too was divinized, and his successor, Tiberius, took the same titles. I have on my desk a coin from the reign of Tiberius (there are plenty of them, readily available). On the front, around Tiberius's portrait, it says, "Tiberius Caesar, son of the Divine Augustus." On the back is Tiberius portrayed, and described, as "chief priest." It was a coin like this that they showed to Jesus of Nazareth, not long after he had ridden into Jerusalem, when they asked him whether or not they should pay tribute to Caesar. "Son of God"? "High priest"? He was in the eye of the storm.
Why was Rome interested in the Middle East? For surprisingly familiar reasons, in fact. Rome needed the Middle East like today's Western powers need it: for raw material. Today it's oil; then it was grain. Rome itself was grossly over-populated and grain shipments from Egypt were vital. In a region just as unstable in the first century as it is today, the job of a Roman governor was to administer justice, collect the taxes, and keep the peace - and particularly to suppress unrest.
That was the gale: the first element in the perfect storm at whose centre Jesus of Nazareth found himself.
Israel
The second element in Jesus's perfect storm, the overheated high-pressure system, is the story of Israel as Jesus's contemporaries perceived it and believed themselves to be living in it.
As far back as we can trace their ancient scriptures, the Jewish people had believed that their story was going somewhere, that it had an appointed goal. Despite many setbacks and disappointments, their god would make sure they reached the goal at last. The stories they told were not simply stories of small beginnings, sad times at present, and glorious days to come. They were more specific, more complex, dense with detail and heavy with hope.
Their theme came to full flower in the story of the Exodus, when Moses had led the Israelites out of slavery in Egypt, across the Red Sea and through the desert to their Promised Land. The Jews lived on the hope that it would happen again. The tyrants would do their worst, and God would deliver them.
Understand the Exodus and you understand a good deal about Judaism - and about Jesus. Jesus chose Passover, the great national Exodus-festival, to make his crucial move. The long story of Israel must finally confront the long story of Rome. This is no time to be out on the sea in an open boat. Or riding into Jerusalem on a donkey.
The western wind meets the high-pressure system. But what about the hurricane?
God
The Jewish story always contained one highly unpredictable element - namely, God himself. God remained free and sovereign. Again and again in the past, the way that Israel had told its own story was quite different from the way God was planning things. Jesus believed that was happening again now.
God had promised to come back, to return to his people in power and glory, to establish his kingdom on earth as in heaven. The Jewish people always hoped that this would simply underwrite their national aspirations - he was, after all, their God. But the prophets, up to and including John the Baptist, had always warned that God's coming in power and in person would be entirely on his own terms, with his own purpose - and that his own people would be as much under judgment as anyone if their aspirations didn't coincide with God's.
Jesus believed that as he came to Jerusalem he was embodying, incarnating, the return of Israel's God to his people, in power and glory (see Zechariah 9:9-17). But it was a different kind of power, a different kind of glory.
Recall that moment in Jesus Christ Superstar - produced when Tim Rice was still writing shrewd, sharp lyrics and Andrew Lloyd Webber was still writing interesting music - when Jesus is approaching Jerusalem and Simon the Zealot urges him to mount a proper revolution. "You'll get the power and the glory," he says, "forever and ever and ever." But Jesus turns and sings those haunting lines: "Neither you, Simon, nor the fifty thousand; nor the Romans, nor the Jews; nor Judas, nor the Twelve, nor the priests, nor the scribes, nor doomed Jerusalem itself - understand what power is! Understand what glory is! Understand at all."
He then continues with the warning of what was going to happen to Jerusalem, because, as he says, "You didn't recognise the time of your visitation by God." This is the moment, and you were looking the other way. Your dreams of national liberation, leading you into head-on confrontation with Rome, were not God's dreams. God called Israel so that through Israel he might redeem the world; but Israel itself needs redeeming as well.
Hence God comes to Israel riding on a donkey, in fulfilment of Zechariah's prophecy of the coming peaceful kingdom, announcing judgment on the system and the city that have turned their vocation in upon themselves, and going off to take the weight of the world's evil and hostility onto himself, so that by dying under it he might exhaust its power.
Throughout his public career, Jesus had been embodying the rescuing, redeeming love of Israel's God, and Israel's own capital city and leaders couldn't see it. The divine hurricane sweeps in from the ocean, and to accomplish its purpose it must meet, head on, the cruel western wind of pagan empire and the high-pressure system of national aspiration.
Jesus seizes the moment, the Passover-moment, the Exodus-moment, not least because these, too, speak of the sovereign freedom and presence of God as much over his rebellious and uncomprehending people as over the tyranny of Egypt.