Some of these people do not want the Negro to lose his grievances, because they do not want to lose their jobs. According to crime statistics, about 1 in 4 women will be raped during her lifetime. Some small percentage of them will be murdered in the course of the rape. A larger percentage will experience attempted murder. Women on the average are about 30 pounds lighter than men.
Women have a serious strength disadvantage when dealing with just a single male assailant.
Ignoring for a moment that it's not appropriate for young girls, disabled women, and many older women, it takes years of practice to become proficient enough to defend oneself against a single large attacker. The victim disarmers who suggest this alternative want women to spend hours every week practicing martial arts rather than spend the time building their careers or spending time with their families or having a social life like normal people do. Both of these require accurate use and have little or no effect on some people. Worse yet, a woman has to be close to the assailant to use them. By the time she discovers that they don't work, there's often no alternate defense left.