"In Gaudiya Vaishnava tradition Hari is a name of both Krishna or Vishnu meaning 'he who steals, or takes away' -- referring to how Krishna takes away all distress and anxieties, and lovingly robs the heart of His devotee. During religious festivals it is a common occurrence to hear people call out Haribol ! Haribol ! meaning 'please call out the name Hari'; the Hare Krishna mantra contains the name in the vocative."