There is an important background element to gender equality that generally is overlooked: the fact that it is not just limited to equality and non-discrimination between "men" and "women". Implicitly it also implies sexual non-discrimination in general, regarding the gender that a person feels or wants to express, as in the case of transvestism, transsexuals and transgender, or regarding preferences in sexuality or type of relation like homosexuality, bisexuality, polyamory or any other variety by free choice and mutual consent.
At this point, one can easiliy make also the jump to racial non-discrimination and any other factor in physical appearance, beliefs or personal preferences.
In short, we understand true gender equality paves the way to non-discrimination for any other difference between human individuals or groups and is therefore our third attention point.