The Torah gives us a Mitzvah to count seven complete weeks bridging the Yom Tovim of Pesach and Shabbos. According to many meforshim this is because Yitzias Mitzrayim was a prelude to receiving the Torah at Har Sinai. Our contemporary practice is to observe Minhagei Aveilus due to the tragedies that occurred. How can we reconcile these two approaches?