I have been reading an interesting bit of history.
"Abraham Lincoln Was Assassinated During Passover. According to the American Jewish Historical Society, many Jews were in synagogue for the holiday when the news of Lincoln's assassination broke. Altars in temples "were quickly draped in black and, instead of Passover melodies, the congregations chanted Yom Kippur hymns. Rabbis set aside their sermons and wept openly at their pulpits, as did their congregants." Sadly, a time that was supposed to be full of celebration became one of mourning."