It’s a valid question. And as wanderingchana wrote, sometimes we need to go through the stages of ????? ????, to stand back in humbled awe, stunned shock and grief, to contemplate the tragedy that befell all of Klal Yisroel (we’re all in this, together). Then there needs to be a time for each and every person saddened by this great calamity to better himself/herself in an area that requires ????, ammending, whether bein adam lamakom or bein adam l’chavero. Each person for himself, what he needs to fix. It’s when some come and tell you for this reason, for that reason, that is problematic (unless by one divinely inspired).
So yes, every one should definitely take on kabalos, privately, after witnessing such a great heartbreaking tragedy.