Reply #6: Those radical commies, the Weathermen, are responsible!

[TahitiNut]

The Weathermen, also known as the Weather Underground Organization, were a US-based, self-described "revolutionary organization of communist women and men" formed by splintered-off members and leaders of the Students for a Democratic Society (SDS). The group, together with two small Maoist groups, was originally known as the Revolutionary Youth Movement. When they split—first from the Maoists, and then from SDS itself—Weathermen advocated the overthrow of the government of the United States and the system of capitalism; toward that end, they carried out a campaign of bombings, jailbreaks, and riots. The Weathermen were active from 1969 to 1976.

http://en.wikipedia.org/wiki/Weather_Underground