The killing of George Floyd has sparked unprecedented protest across the United States and around the world. The Alex Salmond Show explores the human stories behind the demonstrations, with bereaved mother Darlene Cain, whose son was slain by the Baltimore police, with young Chicago activist Taylor Ulmer and Code Pink co-founder Medea Benjamin, to ask whether the campaign message passed on through the years, of racial equality and an end to police brutality, will make a difference this time round.