My favorite is getting the militant types to think about just why animals in specific are held above all other life. A salad kills just as many living things as a steak. Washing your hands is tantamount to genocide on the microbial scale. Why is killing only murder when done on something with a face?

Life feeds on Life. People have the right to choose what they do or do not eat, but pushing those choices on others (whatever the choice may be) steps over that line between your rights and the rights of others to their own path.

interesting link