This story originally appeared in Los Angeles Times. The BBC issued a formal apology after broadcasting a controversial performance from the rap-punk group Bob Vylan at England's Glastonbury festival.

The prime minister is involved; so is the U.S. deputy secretary of State. The BBC is changing policies. But Bob Vylan remains steadfast.

“The BBC Board met on Tuesday to hear what actions will now be taken. The Executive have agreed to put in place a set of strengthened editorial practices and policies for live music programming. These will be important measures to safeguard future live broadcasts from a failure such as this.