things that have personally made my time on Tumblr harder as A Not White:
White people doing the bare minimum of research on an intracommunity discussion, taking a side, and platforming one position or argument in a complicated issue like it’s correct. Often the voices associated with that issue are the most reactionary within their own communities, and now anyone who disagrees with them becomes a target for harassment.
White people not reblogging or engaging with art and fiction featuring characters of color
White people feeling the need to justify their position (which is usually somehow racist) to me and other BIPOC bloggers because we can somehow give them absolution for their white guilt
White people having no clue how to deal with assimilated, partially-assimilated, mixed, and other kinds of ambiguously positioned people of color both in fiction and IRL. If you have any kind of connection to white cultural outputs this can and will be used against you in a harassment campaign.
White people refusing to reblog aesthetic posts featuring models or actors of color or cultural signifiers that aren’t white/Western
White people being disrespectful to nonwhite people who are genuinely religious and take their faiths seriously - religion is often treated as a magical superstitious belief we must have because we’re cultural like that, rather than something that should be engaged with seriously as part of our lives. (Also, white people platforming anti-Christian members of our communities without considering that this is a conversation they aren’t invited to participate in.)
White people acting like characters of color are space aliens who can’t be engaged with at all. This usually takes the form of a fear of tainting the nonwhite character or “I don’t understand this culture or this race so I’m not going to try”, and it also manifests as complete disinterest in fanworks featuring nonwhite or racebent characters.
White people platforming conspiracy theories, anti-intellectual arguments, and pseudoscience because they saw a brown person saying it so it must be true (white agreement confers a kind of authority on posts by BIPOC online, and white people reblogging/quoting/etc en mass will make a particular argument The Agreed Upon Argument. plenty of nonwhite Internet users are chasing white approval numbers and won’t admit it to themselves.)
White people feeling the need to publicly explain things like why they don’t listen to rap or watch films about racial and ethnic minorities because they’re guilty about it. You can just say “I tried that and it wasn’t for me”, or better yet you can keep your mouth shut
White people feeling like they need to have an opinion on every topic they encounter when it doesn’t directly involve them, particularly on issues of racism or representation. It’s one thing if you’re talking with your friends, but some comments are unnecessary
“Obligatory I’m white tag” and other comments drawing attention to whiteness like it’s a sin that the poster has to atone for. Actually, just treating whiteness like a sin to atone for.