I feel like there's little conversation about it because it's an even harder problem to tackle and a less obvious one to see. I will say though, to a large extent economic class and race still remain tied in the US.
I think this is an overgeneralization. I don't doubt this is mostly the case but I don't think it's conclusive that it is always the case, especially when you look into the activism within and by wealthier classes and corporations.
> to premise the question with the idea that they don't care means at best, OP doesn't know what they're talking about
The way I understood the comment is in reference to Facebook/tech, in which case it's very true: Facebook seems to survey gender and race but there's no mention in their diversity efforts about social/economic background. For all we know, all those great paying jobs could be going to well-off people. 4.9% hispanics of 25000 employees is 1,225 people: Are they first-generation college students born in the US to immigrant parents, middle-class graduates from Mexico's engineering schools or well-off kids from Latin America whose parents could afford them a Harvard education? For the record I know people who would fall under each of these three buckets and I think the idea of classifying them under the same category in diversity efforts is very short-sighted.
> at worst, OP is using class issues in bad faith to bludgeon away any attempts at talking about the former.
I don't know in what faith OP posted, but from his last sentence I gather he is vouching to include economic status as part of "social justice as well", not instead-of.
I also think that people who champion social justice are also very much in favor of investment in education and public resources like public libraries to help with economic mobility. So I don't think that isn't a focus on economic mobility, it's more that we expect the federal and local governments to flex their muscle to ease problems with social mobility while companies themselves are supposed to make themselves more welcome to diverse candidates.
The problem we want to eliminate is sexism and racism. Counting the number of times people are actually affected by a negative -ism is difficult. We don't know what people are thinking unless they tell us. Bigots have an incentive to lie about their reasons and non-bigots can be subject to unconscious biases.
On the other hand categorizing people by race/gender is easy. There is always some wiggle room, but there is a lot less ambiguity when answering "is this employee a black woman" compared to "was this employee hired because she is black".
Once you have a set of (mostly) reliable statistics then you can start looking at trends over time, patterns by industry, etc. These numbers can't tell you anything about racism/sexism on their own, but they can help show the general direction the population studied is going and if there are any outliers who might deserve more attention.
So, race and sex are directly tied to economic mobility, which is why they are the important factors that are being measured.
It is, but those people are called socialists and/or communists. If you look, you'd find groups that try to synthesize a unified picture of our common struggles.
I grew up in what is today Trump Country. My high school prepared me to work in a factory. Then the factory moved to China, and now the only jobs left in the area are retail and healthcare. I managed to move out, but the vast majority of people I went to high school with are stuck.
Why is economic background not a class we care about too? Shouldn't economic mobility be a part of social justice as well?