Lets see Canada, so what is their racial makeup of the population? Maybe 90% white or something, it's far north and dark skin up north is bad for vitamin D absorption "low sunlight in winter" so it might feel like a more repressive or repulsive environment to anyone with non white skin naturally with no intervention needed. So of course the truckers would be mostly white by just math in your head "yeah that's racist also" you can estimate 90% more or less will be white and is trucking something that is alluring to a black person to begin with is another factor to consider when calculating how many truckers in Canada at a protest are likely to be white, almost all would be a valid guess I would have imagined that also.