I think it is perfectly ok to sing about white people having their farms burned in Zimbabwe, Ithink it is perfectly ok to sing songs about black people in zimbabwe being killed by fellow africans, I think it is ok to sing songs about africans being mistreated by whites.
regardless of peoples clour if people suffer injustice there should be no reason why people shoiuld not sing songs about that injustice, whether the vitims are pink black brown yellow or whatever