"Women killed" - so what?
I had a massive problem with the hysterical "I even killed the women and children!" bit. So, he killed women, in the Star Wars galaxy, so what?
Cheap outrage-device by Lucas that doesn't fit the world it's playing in.
It's bad enough Anakin killed anyone at all! I doubt that literally all Tusken men were guilty of torturing his mother. Maybe it was just one head-honcho doing the torture.
I have no idea what the gender relations of those Tusken things are specifically, but the Star Wars galaxy as a whole seems to be completely egalitarian. Lots of female warriors there and all, even during Lucas' heyday (Leia, Mara Jade, Padme, Ahsoka etc.). And now even more under the new direction! (Rey, Rogue one)
Lots of female politicians with power as well.
So, if they are allowed to fight and decide, they are allowed to be killed. It's that easy.
No special female-protection in an all-egalitarian society. Makes no sense. That's what "equality" is actually all about if taken seriously. Same privileges, but also same risks and no special protection codes.