Depends if they're intelligent enough, I use the k-word in absolute rage myself but it takes a special kind of stupid to post it or say it in public, or around people that don't deserve it. Think screaming "****" in the middle of a sunday church service.
Words and songs are just sounds without intentions behind them - if I resort to the worst slurs imaginable it's to scare a criminal shitless, not because it's my overall attitude towards people.
In this instance they probably got the song on B side tape of the protesting greatest hits, alongside dancing and burning things to solve a problem. And I do feel angry myself, not because I believe they're intentionally malicious, but they're a waste of a human being that had all this potential and talent and they're using it for **** like this.