Adam Levine -- Shout Out to Gandhi! Goes Soft on Crazed Fan (TMZ TV)

When a female fan sneak attacked Adam Levine during a Maroon 5 concert, he lashed out at her ... with all the peace, love, and kindness he could possibly muster -- and still ended up with a bloody ear.

The lesson? He needs better security, or Afroman as an opening act. Both are effective at crowd control.