Matthew 20:31

‘And the crowd rebuked them, that they should hold their peace, but they cried out the more, saying, “Lord, have mercy on us, you son of David.” '

The two blind men were clearly causing some uproar because the crowds told them to keep quiet. The respectable pilgrims accompanied in many cases by their families would not want beggars mixing with the crowds. But the more the crowd tried to shush them, so the more they cried out “Lord, have mercy on us, you son of David.” They recognised that this was the opportunity of a lifetime, and they were not going to miss it.