Much to the chagrin of the music world, La Rock was shot to death in 1987 while attempting to intervene in a dispute between two rappers. Though it might have meant the end of BDP, the group continued without him. One result was KRS's transformation into a more thoughtful artist who continually spoke out against violence in hip-hop (cf. Stop the Violence on BDP's album By Any Means Necessary), and still makes constant respectful reference to the deceased La Rock.
See also: hip-hop, KRS-One, Boogie Down Productions