Actually... Living as a white person in a land colonised (and brutalised) by white people, AND claiming racism doesn't exist... Problematic. Racism isn't just a system that affects the US. It was a system born of British white supremacy, which was used to dominate and control different "races" around the world. Colonialism is inherently tied up in the slave trade, the same white supremacy drove both. The same white supremacy that continues to kill African Americans.
Marley's personal experience doesn't seek to negate yours, why are you trying to negate hers?