A user posted the question What opened your eyes to what’s happening in Palestine? on !asklemmy@lemmy.ml.
As is evidenced, multiple comments have been removed by mods. The Mod log shows the moderator removing multiple of these comments due to “rule 1”, which on lemmy.ml is:
No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
The mods then also banned some of the commenting users for a few days.
This all lead to a post by one of the affected users to AskLemmy, accusing the mods of “removing all comments critical of Hamas”. “No comments critical of Israel were removed”, the user alleges. The post has since been removed by the lemmy.ml mods as well and the user banned for 14 days.
It could, even if admin didn’t have such bias, mods could have the same bias.
I guess as always, users need to assess how the moderation of communities fit wit their own views, and change communities/instances if needed.