Earlier quoted context omitted.
I like this analogy - sparring with each other like toddlers do, before realizing that they have a lot in common as they age, like the English language, industrialization, the systemic abuse of natives, Big Oil, the World Wars and racism. Now that they're older, they're sparring once again, just like siblings do over the parents' estate.
This is terrible analogy. We're more like neighbours, and US is a bully. We made a decision not to have much a fence before we were friendly neighbours. We regret that decision, and are planting a hedge and reaching out to our other "neighbours" for support. The whole neighbourhood thinks you're assholes and bullies, we're all scared. But that is bring us closer together as result, so there's some upside. Racism? Oh…
Canadian and American racism is documented in specific events, unlike in other countries. I'd be hard pressed to find specific racism-driven events in Poland or Czechia, even though they top the racist charts.
I'm not American so your second point is completely moot.