The meaning seems to be "belonging to a racial minority", and that sense of the word seems to be specific to Canadian English because when I search for "racialized X", for various values of X, I keep finding Canadian web sites. Ils sont fous, ces canadiens.
This is a bit tongue in cheek. We all know what it means in common parlance, but it's a very slushy term. The word implies that it is a status, or a process, which makes conversation even more confusing.
But ultimately, there's only one race -- the human race. Talking about a minority as if they are a separate race is extremely unproductive. I think what we really intend to discuss ethnicity.
The meaning seems to be "belonging to a racial minority", and that sense of the word seems to be specific to Canadian English because when I search for "racialized X", for various values of X, I keep finding Canadian web sites. Ils sont fous, ces canadiens.