Currently having the "dietary fat does not equal body fat" argument with my grandparents and my sister-in-law. Some people have the most amazing difficulty accepting that doctors and politicians will lie to the public and misrepresent data in exchange for lots of money.

About the aluminum though, the very first vaccine on the childhood schedule (hep-B) is reported to contain over 10x the amount of aluminum that's given as the upper safety limit for oral ingestion by infants. Very telling that parents that so much as question the methods of public school teachers can be labeled domestic terrorists, but a normalized practice of iatrogenesis on infants is just good faith behavior and best fit medical practice.