mr scott , 50 , was gunned down by officer michael slager on saturday morning in charleston , south carolina .
singer janelle monáe said : ` this brought tears to my eyes . #walterscott reminds me of my uncle , family . can only imagine the pain his fam feels .
rapper big boi simply tweeted an image of a black square with the words : ' #walterscott '
slager has been charged with murder and could face the death penalty .