just mourn the loss of someone ever. people always have to complain about something related to whoever had just passed and it is so insensitive. Let people mourn however they want to, but don't judge anyone for wanting to help or mourning in a way you don't think is correct.
It's just a silly thought that people will never donate to a homeless man on the street or give that extra dollar at a checkout for some charity but they'll send 5 or 10 dollars to any sort of fundraiser for a celebrity.