If I have to encounter a constant barrage of shitty racist (or sexist, or homophobic, or whatever) material just to exist online, I'm going to pretty quickly feel like garbage. (If not feel unsafe.) Especially if I'm someone who has other stressors in their life. Someone who is doing well, their life otherwise together, might encounter these and go, "Fucking idiots made a racist video, block."
But empathize with someone who is struggling? Who just worked 18 hours to make ends meet to come home and feed their kids and pay rent for a shitty apartment that doesn't fit everyone, and their kid comes up to them asking what this video means, and it just... gets past all their barriers. It wedges open so many doubts.
This isn't harmless.