I love this song, and I love this band!
Their name derives from the Ma Barker gang that included Ma and her sons. They did end up meeting with “divine justice”.
So, is this a Christian band? Wikipedia quotes a band member as saying “For us our faith is what makes us. We believe in showing our fans respect and kindness. I love when bands minister, as long as their lifestyle off the stage lives up to their life on stage. Nowadays it is kinda cliché in some markets to be a Christian band but being that in itself is hard and can sometimes put a bull’s eye on your back. It is not an easy thing sometimes, but no one is perfect. But living to the standards of what you preach and talk about is a big deal and something we chose to do everyday.
Their official website can be found here.