The funeral for the eight Yeshiva students took place on an unusually hot day. Someone had chessed on his mind. He filled empty soft drink bottles with water and put them in a wheelbarrow along with some plastic cups. The sign says "Water, feel free to take a bottle."
This is one of the entrances to the Merkaz High Yeshiva High School. The sign mentions the Talmudic statement (Shabbat 88A) that the Jews re-accepted the Torah on Purim: