|Parshas Shemini, Chapter 10:|
|6. And Moses said to Aaron and to Eleazar and to Ithamar, his sons, "Do not leave your heads unshorn, and do not rend your garments, so that you shall not die, and lest He be angry with the entire community, but your brothers, the entire house of Israel, shall bewail the conflagration that the Lord has burned.||ו. וַיֹּאמֶר משֶׁה אֶל אַהֲרֹן וּלְאֶלְעָזָר וּלְאִיתָמָר | בָּנָיו רָאשֵׁיכֶם אַל תִּפְרָעוּ | וּבִגְדֵיכֶם לֹא תִפְרֹמוּ וְלֹא תָמֻתוּ וְעַל כָּלהָעֵדָה יִקְצֹף וַאֲחֵיכֶם כָּל בֵּית יִשְׂרָאֵליִבְכּוּ אֶת הַשְּׂרֵפָה אֲשֶׁר שָׂרַף יְהֹוָה|
|so that you shall not die: But if you do so [and leave your heads unshorn and rend your garments], you will die. — [Torath Kohanim 10:31]||ולא תמתו: הא אם תעשו כן תמותו:|
Why would Hashem be angry with the entire community if Aaron and his surviving sons were to disregard His instructions?
To quote from Rav Shimon Schwab (zt'l) on Yeshayahu (Artscroll) is hard to choose which one. I suggest you read his sefer yourself but in the meantime I will leave you with this from page 14 where he brings a reference from Sefer Yehoshua, Perek 7 where the defeat at Ai cost some 36 Jewish lives :
"Achan's close circle of family and friends who knew about the violation did not condemn him for it; they didn't ostracize or shun him. So the entire nation was held responsible."
According to Rambam (Hil. Taanis 1:1-3), it is a positive commandment of the Torah for every individual to cry out and search his ways at a time of national calamity, for G-d visits calamities upon Israel to inspire each Jew to repent for his misdeeds. If someone fails to recognize that tragedies occur through an act of G-d rather [than] through happenstance, he is considered cruel, because he will not be motivated to improve his behavior. as a result, G-d will beset Israel with more troubles, until all are motivated to change their ways. (Footnote from Artscroll 1982 edition Sefer Yehoshua, Perek 7 )
|The Young Israel organization refused to follow the halachos specified in this seruv to ostracize and shun the charlatan "rabbi". In fact, they committed FORGERY and PERJURY to hide the seruv from Klal Yisrael!|