Why do so many people support breast cancer but not testicular cancer?

The social context: Breast cancer is more common, there is an industry to subsidize the events and pink ribbons (mammography machine manufacturers), body image is a concern, and there is at least one demographic in which breast cancer carries a superstitious dread. The "activism" is a good thing overall. A sensible man who finds a testicular lump gets with his physician and usually gets a cure. Less fearful overall.