Jesus’ procession deliberately countered what was happening on the other side of the city. Pilate’s procession embodied the power, glory, and violence of the empire that ruled the world. Jesus’ procession embodied an alternative vision, the kingdom of God.
This contrast–between the kingdom of God and the kingdom of Caesar–is central not only to the gospel of Mark, but to the story of Jesus and early Christianity.
The confrontation between these two kingdoms continues through the last week of Jesus’ life. As we all know, the week ends with Jesus’ execution by the powers who ruled his world. Holy Week is the story of this confrontation.
from The Last Week