“On the basis of sex” dramatizes an important chapter in history when young lawyer Ruth Ginsburg fought hard for equal rights between men and women in 1970. It’s an interesting slice of history, and you couldn’t ask for a better actress to fill in Ginsburg’s shoes. Felicity Jones has already made an impression in such movies as “The Theory Of Everything” and “Rogue One”, and she’s well cast here as the ambitious lawyer who would stop at nothing to achieve equal rights. Her empathetic performance draws us in, along with superb period details that truly make you feel like you’ve been transported to a different era. And yet, there are times where I felt a certain distance from it. And I wish they went with a much more “powerful” finale. No matter. “On the basis of sex”, flaws and all, is a movie that truly matters, and you can see it all on Felicity Jones’ wonderfully expressive face. It’s not a perfect film by any means, but if the subject matter intrigues you, then you should definitely check it out.