For 10 points, identify this Jewish holiday which observes a litany of sad events that happened on the namesake day of the Jewish calendar.
Eicha and kinnot are chanted during this holiday, which comes at the end of a three-week preparation period during which activities including weddings, haircuts, and purchasing clothing are forbidden. Traditionally, tefillin cannot be used until late in the day of this holiday, and figures involved in this observance include ten scouts of Moses and Bar Kokhba. Only (*) depressing texts are allowed to be studied on this day, which also commemorates the destruction of the two temples. For 10 points, identify this Jewish holiday which observes a litany of sad events that happened on the namesake day of the Jewish calendar.
Eicha and kinnot are chanted during this holiday, which comes at the end of a three-week preparation period during which activities including weddings, haircuts, and purchasing clothing are forbidden.
{Tisha B'Av} [or the {Ninth of Av}]