Jesus entered Jerusalem to people laying down palm branches at His feet. This was a sign that He was a king in their eyes. Only Jesus knew that the same crowd would put Him to death 5 days later.
"And on the next day, a great multitude that was to come to the festival day, when they had heard that Jesus was coming to Jerusalem, Took branches of palm trees, and went forth to meet him, and cried: Hosanna, blessed is he that cometh in the name of the Lord, the king of Israel." -John 12:12-13