One saying that I like as a way of explaining it is that “racism is the soup, not the croutons”. That is, there is not a discrete set of racist people surrounded by everyone else who is not racist, instead, racism is the sea that we all swim in and it’s our choice of how to live knowing that fact.
To give you an example, in the tech industry in Silicon Valley, personal referrals give you a very strong leg up in the hiring process. This is an entirely rational process but what it leads to is that companies that are comprised of a core group of people tend to hire more of the same people since people tend to be friends with people similar to themselves. This ends up leading to racial disparity since the majority of people in tech are White/Asian and so they continue to reinforce that color bias. Despite not being able to point to any one person who was individually racist in this scenario, the end result is still one that uniquely disenfranchises black/hispanic tech workers and requires active awareness and mitigation in order to correct this disparity.
Another salient example, there’s strong evidence that shows that if you’re the only one of X on your team, you’re dramatically more likely to attrition out compared to if there are at least 2 of X on the team. The reason is, if you’re the only X, you’re solely responsible for being the voice of X when arguing against the rest of the team which is immensely tiring. If there’s more than one, then the rest of the team is more likely to accept your views because they’re echoed by another person. As an Asian or White male, it’s extremely unlikely to ever find yourself as the only member of your type on a team. However, given that Black/Hispanic/Female representation in tech is only 1%/3%/13% respectively and team sizes tend to be between 8 - 15 people, even if tech practiced pure colorblind selection, it would lead to overwhelming majorities of teams only having one Black/Hispanic/Female member. The data shows that this leads to disproportionate attrition from these groups, not only from your team but from the industry in general, only worsening the representation statistics and making tech an even more inhospitable place. Again, even if we were able to remove all of the overt racist behavior in tech (of which there’s also plenty that drum people out), there’s still disparate racial impact which requires active efforts to mitigate if you believe in racial justice.
All of these things require you to be able to actively see color in order to address. “Not seeing color” is just putting your head in the sand and hoping the problems go away on their own which is doable if these problems end up not affecting you or benefiting you but it’s pretty fucking shitty if you’re on the receiving end of these problems.