What is worse: listening to music or killing innocent people?

Re: What is worse: listening to music or killing innocent people?

Both are worse as far as the punishment from Allah :SWT:.

I want to know how we know and who decide who is innocent and who is killing who? I mean who is killing innocent or who is capturing innocent?

If I see news headline on CNN/Al Jazeera about a bomb blast in Israel how do I know who is innocent? What is the guaranty that what CNN/Al Jazeera reported is true or to what extent its true?