Wikimaze

In honor of the ratification of the 13th Amendment, we are doing a Wiki-maze: Africa to Barack Obama in 13 steps (one of which is the 13th Amendment).

1. Africa
2. Liberia
3. Emancipation
4. Emancipation Proclomation
5. Slave-holding States
6. 13th Amendment
7. United States Constitution
8. freedom of speech
9. Criminal speech
10. Shouting fire in a crowded theater
11. Oliver Wendell Holmes, Jr.
12. Harvard Law School
13. Barack Obama

Follow along. Each item on the list can be linked from the Wikipedia article of the previous item.