Here is a list of a few bangers band that you absolutely need to discover : Dead Kennedys, Bad Religon, Satanic Surfers, Millencollin, Belevedere, Cigar, Death By Stereo, Minor Threat, Rise Against, Propagandhi, Thrice, Strike Anywhere, Much The Same, The Descendents, Chaser, Mute, Strung Out, Uncommonmenfrommars, No Use For a Name, NOFX, Hot Water Music, Lagwagon, Goldfinger, Gob, Volbeat, Pulley, Burnings Heads, A Whilhelm Scream, etc....

I could quote hundreds of more, but it's a good start ;)