Originally Posted by John Wilkes Booth

What's your point? That because gender is a more rigidly defined biological concept than race, sexism is valid while racism isn't?

There are obviously biological differences between men and women, but they're not the kind of differences you'd need to justify treating women as second class citizens. That is based not on biology but on an outdated (and misogynist) conception of women as being less capable, trustworthy, intelligent, etc.
No, what's bizarre is suggesting that a law stating a woman must have 4 adult male witnesses to corroborate a rape and get her out of jail is somehow designed to help women.