The 9th day of Av is traditionally a day of mourning in the Jewish faith. I will not mourn for the birth of modern Judaism. I have no desire to return to the days of animal sacrifice as some of our Orthodox brethren do. Without the destruction of the temple, Judaism as we know it would not exist.
I do, however, mourn the loss of life. I mourn the loss of life when the second temple was destroyed. I mourn the loss of life in the Holocaust. I also mourn the senseless killings at the Batman movie. What does the last one have to do with anything? It is a senseless killing that should touch us all. I just now saw word that a woman who lost her six year old daughter in the shooting has now suffered a miscarriage.
The world is not a perfect place. People sometimes choose evil with devastating consequences. It is my hope, and it is only a hope, that as the years go by, people choose good more often than they choose evil. It is useless to ask where God is when these tragedies strike. God had nothing to do with them. He gave humans free will and humans are free to choose evil. My heart goes out to those affected by that evil.