"If someone on your adult kickball team laughed & laughed when a player from the other team accidentally split their femur in half, we would rightly view that schadenfreude as inappropriate".

Schadenfreude - Malicious enjoyment derived from observing someone else's misfortune.

https://en.wiktionary.org/wiki/schadenfreude

Heaton, Andrew. Tribalism Is Dumb: Where It Came From, How It Got So Bad, and What to Do About It. United States: Last House Standing Books, 2024.