My Mom tells me story about her grandmother. In the 1920s, my great-grandmother divorced her husband* and he ran away to Texas to shack up with another woman. No child support, no presents, visits or anything from the man. He forgot they existed.
My great-grandmother had two young daughters to raise and was able to get a job in a bank. She was doing a great job and went to ask for a raise and was shot down. She talked about how the men, doing the same job she was were getting much more money. And the bosses said "that's because they've got a household to run and you don't need that because you're a woman and this is all a bit of a hobby". (Any talk about being the head of house was shot down and as you can imagine, they most like blamed her and it was her own fault the marriage ended. She hadn't been a good wife, hadn't tried hard enough, etc.)
And here we are, just about 100 years later, still talking about how women are paid (sometimes much) less for the same work.
*Uncommon, but she was pretty forward thinking and my Mom always looked up to her as a feminist, especially in the 1960s/1970/1980ss as my Mom struggled with her own gender equality in jobs, sexual harassment, gender pay, etc. The male dominated trustee banking industry, of which my Mom was a trailblazer, was rife with issues and this eventually caused her to leave.
It makes me angry. And as an engineer, who is female, these things really cut close to my heart.