I wouldn't say it is harmful to generate as much publicity and awareness for what is happening and get that it is important to make sure that there is inconvenience to disrupt people who do share racist views and drown them out. I think that it is important for people individually to educate themselves in the meantime while they do share these posts to make sure that it can be a long term process for them aswell as sharing this short term viewpoint though. I completely understand avoiding posting something and don't think anyone should feel ashamed for not posting things if they don't wish to and they shouldn't feel obliged to do that either. I just think from the perpspective of a white person it is important that we educate ourselves as to why there are these disparities, the histories and what the movement means ASWELL as creating awareness in this window that has presented itself. For that long term change it's important that we as an ally know what it means to share quotes by black activists/what blackout tuesday means.
If i'm being honest I think most people are at the beginning of their journey of understanding racism. Being conscious of & understanding the basic concepts of racism, and treating people equally is, in my opinion the bare minimum. There's not much difference between someone who knows nothing and someone who knows the bare minimum, so I don't understand the judgement. But maybe my standard for bare minimum is too high.
It's absolutely imperative for people to individually educate themselves on the issue, but that's always been the case for any issue at any time.
For white people to be effective at changing racism (& general discrimination) long term, it comes in educating other white people, especially friends & family - having uncomfortable conversations and, sacrifice. If you know someone in your life is racist, especially family members, and you continue to engage with them - I don't think you can call yourself an ally, (I'm speaking generally of course) in some situations (such as the workplace) that's not possible, but generally being a true ally means a lot of sacrifice.
If we're going to have a conversation about being part of something because it's trendy, personally I'd say we would have to start there.