What's the Kennection? #185

In the Code Duello of 19th-century duels, what term was used for the go-betweens for each party who tried to mediate the dispute?

What tiny burrowers are the only mammals that are true hermaphrodites, as the females have both ovaries and testes?

What cookies, which Nabisco once insisted were really "fruit and cake," now come in flavors like fig, strawberry, and triple berry?

What L.A. neighborhood saw six days of rioting in August 1965, sparked by the arrest of Marquette Frye?

For what company did O. J. Simpson shoot his iconic "running through the airport" ad in 1975?

What's the "Kennection"?