An observation: given two people, it’s perfectly possible for their reactions to an event happening, an incident occurring, or a decision made, to be simultaneously completely different, and yet both be reasonable and legitimate–that is to say, correct.
This applies as much to natural and man-made disasters and the results of referendums and elections as it does to more minor incidents and events. Sneering at those whose reaction is different to yours is … not becoming.
One point of view might be more appropriate, or balanced, or generous, but: (a) any feelings of clear and straightforward moral superiority are likely mistaken; and (b) sniggering is never okay. (Related: The “Other Side” Is Not Dumb.)