The act of using breast cancer to guilt consumers into buying a product which, if it had not been for the advent of aiding the cure for cancer, they would not have bought.

the use of breast cancer by corporate marketers in which companies promote their products with claims to donate a percentage of proceeds to the cause

Riding on the LGBT rights while promoting ones political hatred.
E.g. Anti-immigration and far-right groups performing “gay pride” events at locations with a large Muslim population to insult Muslims or to expose alleged anti-gay hostility among Muslims.