I can see that, but I don't understand how simply 'attaching a label' could lead to any real earnest sentiment. If I train myself, day in and day out, to tag a photo of children 'racist', is the presumption that I will start to actually think that children generally believe in fundamental qualitative differences between people that break along racial lines? That isn't how my brain works. If someone asks me 'hey, are kids racists?' I don't think 'hmmm... do I FEEL LIKE kids are racists?'... I think 'Hmmm... do I have any evidence or have I come across any resources that suggest children might harbor racist tendencies?' And 'well I attached all those labels' doesn't qualify as evidence of anything except me wasting my time. Words have power, but they're not magical.
It certainly can be frightfully easy to lead people down a path into forming tons of negative associations about some group or topic, and that will result in a trained emotional response pretty reliably..... but it's just an emotional response. It doesn't mean anything, and can't be used to support or detract from anything in terms of what is true.