This is the Sunday that begins the 'HOLY WEEK' of the Church.
The feast marks Jesus' triumphant entry into Jerusalem.
Palm
Sunday is usually marked by the use of palm fronds(sometimes tied to
the shape of a cross) together with 'Hosanna in the highest' chants by
the congregation while the do a PUBLIC procession on the streets in a
similar manner like 'Christ the King'.
The symbolism is captured
in Zechariah 9:9 "The Coming of Zion's King – See, your king comes to
you, righteous and victorious, lowly and riding on a donkey, on a colt,
the foal of a donkey". According to the Gospels, Jesus rode a donkey
into Jerusalem, and the celebrating people there lay down their cloaks
in front of him, and also lay down small branches of trees. The people
sang part of Psalm 118: 25– 26 – ... Blessed is He who comes in the name
of the Lord. We bless you from the house of the Lord ...