The whole city was excited that Jesus was there. Jesus has finally come to Jerusalem. People have heard stories about what he's done nearby, but this is the first time that he's come to their town. Something obviously incredible is going to happen. They throw down palm leaves and their coats and celebrate.
People like to juxtapose this scene with his crucifixion 5 days later and wonder what happened. But when you read how his arrest and trial went down, it was all a carefully orchestrated plot by people in power. Jesus' impact on people was obvious, and people in charge were scared. He was bringing about change, and it was going to continue in their city.
The movement of God, and true Christian spirituality can be scary. We're unfamiliar with it, and sometimes it can be uncomfortable. It's a different mindset on how things should work within the church, and a lot of times people in power react adversely to it. I pray that I can embrace it and develop a ministry that embraces spirituality and encourages people to search for truth and fall passionately in love with Jesus. JM