The Rev. Jesse Jackson, a leader of the Civil Rights Movement and protege of the Rev. Martin Luther King Jr., has died at the age of 84.

King Charles III’s brother, who had already been stripped of his royal titles over ties to Jeffrey Epstein, was detained for several hours on Thursday on suspicions of misconduct in public office.

It was the first time in nearly four centuries that a senior British royal was placed under arrest, and it underscored how deference to the monarchy has eroded in recent years.