INFLAMMABLE MATERIALStiff Little Fingers came roaring out of Northern Ireland in 1979 with a ferocity and sense of black humor that could only have come from growing up in a war zone. While other contemporaries (such as the Undertones) tried their best to rise above the conflict in pop's embrace, Stiff Little Fingers chose to address the daily indignities and injustices head on. Aggressive punk anthems such as "Wasted Life," which rejects violence as a solution, and the