To make it clear: that song is not really focused on welcoming refugees (though the band playing it really supports that cause, too). That song is very specifically targeted at pointing towards the haters and criticizing their hate.
The "haters" are ridicuously outgunned with the full power of both the media and the state arrayed against them, so they will lose. The imbalance serves to mask the nature of the conflict, makes it look unlike a classic civil war. Not enough carnage.