Answer by taking a quote from the following article:

Henry Lawrence Garfield (born February 13, 1961), better known by his stage name Henry Rollins, is an American musician, actor, writer, television and radio host, and comedian. He hosts a weekly radio show on KCRW, and is a regular columnist for Rolling Stone Australia and was a regular columnist for LA Weekly. After performing in the short-lived Washington, D.C. band State of Alert in 1980, Rollins fronted the California hardcore punk band Black Flag from August 1981 until mid-1986. Following the band's breakup, Rollins established the record label and publishing company 2.13.61 to release his spoken word albums, and formed the Rollins Band, which toured with a number of lineups from 1987 until 2003, and during 2006.

Rollins and his best friend Joe Cole, son of actor Dennis Cole, were involved in a shooting when they were assaulted by robbers in December 1991 outside their shared Venice Beach, California, home. Cole died after being shot in the face, but Rollins escaped. The murder remains unsolved.  In an April 1992 Los Angeles Times interview, Rollins revealed he kept a plastic container full of soil soaked with the blood of Cole. Rollins said "I dug up all the earth where his head fell--he was shot in the face--and I've got all the dirt here, and so Cole's in the house. I say good morning to him every day. I got his phone, too, so I got a direct line to him. So that feels good."  In a 2001 interview with Howard Stern, Rollins was asked about rumors that he had Cole's brain in his house. Rollins stated that he only has the soil from the spot Cole was killed. During the interview, Rollins also speculated that the reason they were targeted may have been because days prior to the incident, record producer Rick Rubin - who was a fan of the Rollins Band - had requested to hear the then newly recorded album, The End of Silence, and parked his Rolls-Royce outside their Venice Beach house while carrying a cell phone. Because of the notoriety of the neighborhood, Rollins suspected that this would bring trouble because of the implication that they had a lot of money in the home. He even wrote in his journal the night of Rubin's visit: "My place is going to get popped."  Rollins has included Cole's story in his spoken word performances.

What is Joe Cole Murder?
Rollins and his best friend Joe Cole, son of actor Dennis Cole, were involved in a shooting