1)Nebuchadnezzar laid siege to Yerushalayim
2)3,000 Jews were killed in Riots in Bucharest riots in !941
3)There was a Decree of the Elimination of Jews from German Economic Life in 1939.
4) The Nazis in Warsaw issued a decreed that Jews where not to greet Germans in public in 1939.
5)The graves Of Yehoshua Bin Nun & Kalev Ben Yefuneh Desecrated by Arabs in 2010
-Malachi (Medrash says same as Ezra Hasofer)
-Harav Nosson of Breslov Mechaber of Likutie Halachos in 1844
-Rav Yehuda Eileinberg Mechaber of Minchas Yitchok 1610
-The Rabbanut of Israel Declared Asara B'Teves as Yom ha-Kaddish ha-Klali which means the general Memorial Day for those Jews who died during the Holocaust whose Yahrzeit is not known