Africa also has other problems of some note. We know it's happening, and we have the power to help. But we stand by and do next to nothing. So people die. To me, that's the same as murder.
People mostly kill through passivity and complacency.
Guns are rarer weapons. Recently, drugs companies and the American government attempted to commit 'passive genocide' in South Africa. They wanted to prevent cheaper rival versions of AIDS medicines from coming on the market. If they had succeeded, many thousands of people would have died. Not murdered with guns, but slowly, undramatically, for money.