Lyric discussion by Bears09 

Cover art for This Is War lyrics by 30 Seconds to Mars

I think this song can be applied to any cause you strongly believe in. For example, I had cancer when I was a little girl and I know I work with cancer patients, volunteer with the American Cancer Society, and conducting research on why we fear cancer. To me "This Is War" not only against cancer but, the stigmas it creates as well. When I'm done with my research I hope it will be "a brave new world".

My Interpretation