The idea that no one that has ever committed a crime (especially one that is not very harmful in the grand scope of things--it's not like the guy was a serial killer) deserves to be memorialized by his friends and family is insane and horrible.
There's a good case for the idea that the family of someone whose actions took away the friends and families of countless others - Lubitz, Tsarnaev, etc. - should have the decency to mourn far away from the victims of their loved ones' murders.
That's not the case here, though.