Ronda Rousey apologizes for Sandy Hook conspiracy video, warns against falling down 'black hole of bullsh*t'

Nearly a dozen years after a mostly forgotten-about social media post resurfaced, Ronda Rousey has apologized for what she called “the single most regrettable decision” of her life.

In the wake of the Sandy Hook Elementary School shooting in Newtown, Ct., in late 2012, Rousey reposted a conspiracy theory that, among other things, said the shooting was a hoax, a decision that Dana White defended at the time. During the Dec. 14, 2012, massacre, Adam Lanza killed his mother, then 20 children...