First of all that does not come from a text book. Second, like most leftist propoganda, they associate sexuality with identity. They can not seperate the two. They can not realize that there is more to life than what people like to do with each other's genitals. That is true psychological disfunction. An identity crisis so great that sexuality invades all corners of your life, so that finaly you can no longer make accurate judgements in life, including private, public, and political decision making. Therefore if you want to attack someone you believe their identity to be as fragile as your own and you attack their sexual ego. I would be willing to bet if the person tried to attack you in a physical way the first place they would go for would be your genitals.