Trayvon Martin , 17 , was shot dead a month ago in Sanford , Florida . Across the country , many are demanding the man who shot him be punished . They included throngs of people who marched on streets in front of the Georgia State Capitol in Atlanta , decrying a `` stand your ground '' law in that state -- as in Florida -- that allows people to use force in self-defense . Martin 's family attended three on Monday in central Florida . Events are held nationwide , from San Francisco to Atlanta .
Trayvon Martin , 17 , was shot dead a month ago in Sanford , Florida . Across the country , many are demanding the man who shot him be punished . Martin 's family attended three on Monday in central Florida . Events are held nationwide , from San Francisco to Atlanta .