[reasonisfaith]

Are you laughing (in a nasty way) about the fact that the person died?

Or are you laughing in a good way, celebrating the person’s life?

The difference is subtle, but huge.

[TangoLimaSierra]

Are you laughing (in a nasty way) about the fact that the person died?

Or are you laughing in a good way, celebrating the person’s life?

The difference is subtle, but huge.

Not subtle at all. A simplistic view on your part.
I'm 75, so, been to a few funerals. There was laughter at every one of them including my parents'. No one being inappropriate.

If your experience is different, I suggest a new circle of friends.