As a Canadian there's some merit to what they're saying, IMO. Settler-colonialism and imperialism does inherently have a deep impact on a country's psyche, and the mentality that comes out of it definitely plays a large role in ensuring the masses remain deeply and even irreconcilably divided, so long as the settler-state persists (and often well after as seen with South Africa).

The violence that happens here might be less explosive- and even less rampant, due to not being quite on the same level of hellhole as the US- but it manifests itself all the same.

New Zealand shooter, incel Canadian van driver.

Edit: Ariana grande concert in the UK. Literal result of imperialism. I can keep adding more.