Ah so we're talking about reporting racist incidents and not really talking about protecting children then - I suppose from that perspective not calling police on white guys makes sense
Of course white men abduct and abuse children, but the fact is that if the child and adult male are of the same race, the odds are much more likely that its a father, uncle, etc. Just a fact. And there are plenty of real world examples of people calling cops on same race men in the vicinity of children. I recall a story recently where an amateur single, male photographer was taking pictures of kids playing at a playground and had the cops called on him. So it does happen. As I said, I don't have the answer to these types of questions. I guess it boils down to evaluating the downsides of offending someone versus a child being harmed. Not an easy answer, IMHO.
So now this is going to seem like a wild proposition, but maybe people could actually observe for signs that the child is actually in distress. Things like the guy loading small children into a car without car seats, kids who are getting rushed from a car indoors, children looking around uneasily or avoiding eye contact with others, marks or other signs of abuse. It's usually pretty easy to tell when a child is uneasy around an older person with a modicum of observation. The knock on benefit is that this actually works when they are with blood relatives who are abusive, or simply for situations where they are from the same racial stock.
And the probabilistic assessment seems a little off - a guy is sitting with kids in a public location having lunch regardless of race is much more likely to be a father, or uncle, or caretaker because that is an incredibly common scenario and unlikely to be a kidnapper because that is an exceedingly rare scenario. A sex trafficker who needs to feed his captives will be buying food and bringing it back to the car or the house, not taking them to a location where they could run away to where people could intervene and help the kids. 'Stranger Danger' in general is an incredibly uncommon scenario for abuse.
And for all the sturm und drang - no one would be willing to legislate some requirement that mixed race families get additional scrutiny because it's clearly both insane and unconstitutional. And ineffective. One of these days a nervous cop is going to get peppered into one of these encounters and we'll really see the fruits of what this thinking of the children sows. Even short of that, biracial children being involved in multiple police encounters or harassment by wackos while they're just going about their lives, or alternatively being unable to ever be in public with just their father has a serious downside. And I'd suspect the probability this happens is much higher than the number of kidnappers who have been foiled when they took their captives to lunch in public.
Indeed with the Rotherham case I'm sure there were multiple signs of a problem beyond a difference in race which were ignored.
EDIT: And just to emphasize - this was a Subway in Walmart. Next to the police station and a doughnut shop, Walmart is probably the next most likely place in America to be in close proximity to a police officer.
