Cancer prevention, including possibly radical changes in industrial and energy policies, is fairly off-limits, whereas cancer treatment and the search for a cure is almost certainly our most widespread and publicly visible form of altruistic charity and advocacy. When you see athletes or celebrities marked with bright pink, or a public event packed with pink shirts or ribbons, or—alongside a road—a giant pink inflatable anything, you are now less likely to think "WTF is that?" than "We need to help cure breast cancer".
War prevention, including radical redirection of our resources and economy away from war, re-education away from the propaganda of beneficial violence, support for nonviolent conflict resolution, and promotion of international law and the prosecution of war makers, is likewise fairly off-limits. But war treatment and the search for a cure for war once begun, seems significantly less useful than the search for a cure for cancer. War is indisputably and entirely human-made. Most of its fatal victims die immediately. Halting a war once begun is immensely more difficult than refraining from starting it, as no one party can control a war's path, and support-the-troops propaganda convinces people that ending a war is more evil than continuing it. Once a war ends, undoing the resentment and hatred and habits of violence, and the environmental destruction (and the cancer epidemics), and the destruction to liberties and democracy, all adds up to an immense—if not impossible—task compared to that of avoiding wars before they're started.
So, when we compare a public demand to abolish cancer with one to abolish war, the latter seems to require halting our biggest public program, whereas the former allows us to go on driving our SUVs to Wal-Mart as long as we stick a pink ribbon on the back to indicate that doctors and scientists should continue the great march of progress. And of course they should. We should be investing vastly more in curing cancer, not to mention Alzheimer's which is as big a killer as cancer but opposed by far less funding (and not a particular threat to that favorite of all body parts: the breast).
But abolishing war may be the more pressing demand. Nuclear weapons could be used intentionally or accidentally and destroy us all. The resources dumped into war are badly needed for the work of averting environmental catastrophe (not to mention curing cancer). What if a campaign to abolish war were to learn a few tricks from the campaign to abolish breast cancer? Following the lead of the Afghan Peace Volunteers, Campaign Nonviolence, World Beyond War, and other peace groups are encouraging everyone to use sky blue scarves and bracelets as symbols of peace and support for ending all wars. What if sky blue symbols became as widespread as pink ones? What would that look like?