Question

In the lamentations, a midrash is mentioned saying that the young people, despite the bloodshed and the groaning of the wounded, began to sing when Titus entered the Sanctuary.
Because they saw the 600,000 destroying angels waiting at the entrance to the Temple to take revenge on Titus… [in plain language, to make mincemeat of him].
The elders did not sing; they were afraid…
Perhaps Heaven had given him permission.
The destroying angels saw that the Divine Presence was silent, so they did not harm him.
Sadly, the elders were right.
 
When they built the Second Temple, the young people sang and rejoiced, but the prophet describes how the elders [who had seen the First Temple in its glory] wept…
So much so that the sound of the elders’ weeping rose above the sounds of the young people’s joy, to the point that they could not hear the young people…
 
Who was right?
 
My daughter, may she live long, mentioned that on November 29, as soon as the results became known—that the nations of the world were telling the Jewish people, “Go up to Zion and establish a state” [after 2,000 years…]—the young people went out and danced in the streets all that night…
They saw it as a night of [the beginning of] redemption.
And again, the elders did not.
Ben-Gurion, for his own reasons [the meaning of the vote results was war, in which the best of our sons and daughters would be killed…], and Rabbi Zvi Yehuda Kook and other rabbis with him, for their reasons [“and they have divided My land…”]. Bottom line, once again the young are thrilled out of their minds, while the adults are worried…
Who turned out to be right?
And in general, for the future—whom should one listen to?
The elders or the young?