From an e-mail we get with information about student organizations:

Rape Aggression Defense Class
Sponsored by Women's Law Association

The Women's Law Association will be sponsoring a Rape Aggression Defense Class designed to teach women defensive concepts and techniques against various types of assault, utilizing simple, effective and proven self-defense tactics. All female members of the Harvard Law School community are invited, including LLMs and wives of Law School students. Men are not allowed to attend or observe classes.