Tzvi, bad approach. Jews, on the outside, are mourning bricks--but what they are actually mourning is the expulsion of God's presence and their current inability to serve God in the best possible way, through sacrifice. Since even most Orthodox Jews are rather estranged from a building that was destroyed 2,000 years ago, you can't honestly believe that that is what Jews cry over. It is the fact that their connection with God was severely reduced and they pray to God to reestablish their relationship with him to the fullest.
Two seriously wounded in crime-related shooting in Netanya (Haaretz)
from the article: Why I Still Fast on Tisha B’Av