Is Flogging Molly Anti God?

I was listening to flogging molly with my dad the other day, and felt that some of the stuff Flogging Molly was singing about were "Anti-God" or even "Satanic". I really don't want to believe it, but the words don't lie. Please try and give me facts that support my side, and maybe why some of the songs say what they do. I really need your help, or I can't go to their next show. Thanks