Ignoring Bernie for the moment, “against the working class” is usually a dogwhistle for “poor whites have racial nervousness and i want to exacerbate that for political gain.”. You wont find real examples because, generally, professional democrats arent against anyone. (even nazis, apparently.)
Bernie’s specific crtique was a slightly tone-deaf critique that the dems were largely silent on the economic nervousness of the working class, and instead spend political capital fighting for racial and gender equality. Since the white male working class is not oppressed by race or gender, or in a position to really oppress anyone, they often feel unrepresented.
Nbcnews linked to a report by the college board, that look like it tracls the relative cost of college all the way back to 1994 - - ten years after Regan’s fuckery, and at least 20 yeara too short to show a real drop. And the drop they show is over only about 4 years.
Today’s students were raised by a generation who lived through crippling debt, and see no reason not to expect tuition to skyrocket over the nexr few years.
Not to mention “tuition and fees” ignores the absurd cost of housing.