Wearing such boots was and is typical of racist and non-racist skinheads alike, but racist skinheads commonly use red- or white-colored shoelaces in their boots to identify themselves as white power skinheads. It is also traditional for them to lace boots with "ladder lacing," so that the laces don't cross each other going up the boot.
Within a few racist skinhead circles, white or red laces have to be "earned" by some violent act such as attacking a perceived enemy of the white race. However, most racist skinheads wear red or white shoelaces not because they have committed an act of violence but simply because it is part of their subculture.
