Today is Tisha b'Av, the ninth of Av, a Jewish day of fasting and mourning. It is on this day that the First and Second Temples were destroyed. The Western Wall, in Jerusalem, is a retaining wall of the Second Temple. It is, especially on this day, a locus of prayer and reflection. It is also, on this particular Tisha b'Av, the location of a very important photo opportunity for an American presidential candidate.