Beastie Boys’ Adam ‘MCA’ Yauch, 1964-2012

Beastie Boys co-founder Adam Yauch — known by his on-stage and behind-the-lens alter egos MCA and Nathanial Hörnblowér, respectively — lost a nearly 3-year-old battle with this morning, passing away in a New York hospital and leaving a deep musical and activist legacy that spanned the 1980s, ’90s and 2000s.