If you want to listen to punk, listen to bands that arent on major labels, actually retain that dirty, crusty, thrash sound and write politically motivated and heartfelt lyrics. THAT is what punk is all about. Pissed off and no radio friendly lyrics..... Blink, Green Day blah blah blah is POP, nothing more, nothing less.
You want punk, listen to this stuff....Powerviolence, Grindcore, Thrash, Crust. Hardcore.
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Blessed be the Lord my strength, which teacheth my hands to War and my fingers to fight.