Finally, someone on Twitter with sense!

Come on now, surely you aren't making an appeal to ignorance are you ? I don't know therefore racism? That's a logical fallacy for a reason. There could be many reasons why minority groups might not want to be firefighters. Personal choice, culture, misinformation about the career, health risks pertaining to firefighters, relatively steep requirements etc., and yes, even occasional discrimination. I'm fairly sure all of those and more are a contributing factor.

I can admit that racial/identity discrimination happens however discrimination is necessary in systems that require above average performance, unless you want someone's grandma rushing in to a burning building. The burden here would be to prove that discrimination is not based on reasonable criteria pertaining to the career and instead based on identity. Noticing a disparity and crying racism is intellectually dishonest and can actually distract from real issues that could help solve the problem, if indeed there even is a problem.