I’ve found some evidence and posted it here:
Lemmy.world Is Anti‑Humanity. How Its Admins Weaponized Defederation to Silence Palestine Solidarity

The last I've seen was this, but I remember before lemmy.world's admin defederated from an entire instance over one user's "death to all Zionists" display name. That user stepped down. The damage was done.

This was a political act. When a platform punishes critics of documented apartheid and ethnic cleansing more harshly than it punishes the apologists for those crimes, yes—that's anti-humanity in practice. Complicity doesn't require intent, just silence and a ban hammer.

edit: I've found more evidence and posted it here:
Lemmy.world Is Anti‑Humanity. How Its Admins Weaponized Defederation to Silence Palestine Solidarity

The problem is, Israeli far-right groups and Zionist advocates have spent decades turning "antisemitic" into a shield. You call out forced displacement, apartheid, collective punishment—all well documented by Amnesty, B'Tselem, and Human Rights Watch—and they call you an antisemite. It's an old trick, and it works.

So when a platform like lemmy.world bans "anti-Zionists," they're buying into that same smear. They're not separating bigotry from basic human rights criticism. That means you literally can't speak out against genocide there without being branded an antisemite. The only way to say "stop the genocide" is to wear that label as a badge of honor. And that's exactly the point: any platform that forces you to accept a false accusation just to state the obvious is complicit.