Keep going! I think you still need more precision. Your racialized students are all victims of racism at nearly all times. What you’re talking about is when racialized students are victims of harm (which comes in many forms) where that harm is the intimate form of structural racism.
So when someone uses a racial slur, racialized people experience harm if they are exposed to it. A) what is that harm if the slur was used at them versus if that slur was used near them but not at them? B) is there harm if no racialized people are exposed to that event?
Being able to articulate these sorts of nuances in a way that is internally consistent will be the result of struggling with these concepts and coming to deeper understandings and the path forward will be clearer.
To put a finer point on it, if a white child, in a room of 5 white children and a white teacher, uses a racial slur, how would you describe that, how would you understand the consequences of that, how would you make the decision on whether and how to intervene, and how would you communicate your decision in context?
This is the work we have to do as individuals, to struggle with our understandings against the real world we live in and challenge our own positions and understanding to more thoroughly champion those values we hold dear. Keep going, you’re on the right path. Keep struggling, it only gets harder for a while. If it starts getting easier, you’re going the wrong way.