[Heartlander]

Examples of 'beneficial' human mutations in evolutionary literature :

1. Sickle Cell Anemia
2. Cystic Fibrosis
3. Glucose-6-Phosphate Dehydrogenase Deficiency
4. Tay-Sachs Disease
5. Autism
6. Rape
7. Murder
8. Stupidity

[Dilbert San Diego]

Could we add liberalism as a mutation?

[wbarmy]

And the last one is usually fatal.