Language
With any social movement where changes occur, the language sooner or later reflects the change.
It wasn't very long ago that it was standard practice to use masculine pronouns (he, him, his) to refer to people in general. I grew up in the 70s and 80s and I can still recall my high school English teacher putting loud red slashes through the word her when I used "his/her" to refer to the generic child in my admittedly cheeky essay entitled What’s Wrong With Parents Today?
The teacher explained: “to avoid confusion, use his instead of his/her” and added most notably: "it’s not sexism, it’s accepted practice.” To avoid confusion?? Nothing was more baffling to me than having a woman in authority (yes, the teacher was female!) tell me it was okay to erase girls (or anyone) from the conversation.​
Just a woman's movement and a few decades later and it's perfectly acceptable to use his/her.​
But we also want to proactively change sexist language patterns that still exist in order to effect change.
While culture shapes language, language also shapes culture (and that's what we're here to do!)
Notice with your children sexual discrimination embedded in ordinary English usage; language that excludes girls and women, or makes them invisible. Choose more inclusive words in everyday speech. Many of the gendered words tend to belittle women's contribution to society. And they have a profound effect on the minds of little girls and boys. Studies have shown that when people are given words like 'businessman' and 'fireman', the vast majority of them will later visualize, describe, or illustrate men doing these jobs.​
Many years ago, only men were allowed to work in these professions. Women could not become firefighters or be CEOs. But using that language today just perpetuates a system that promotes men as those that are strong, intelligent and in charge. What then, does that say about women?