More than anything, punk prides itself on it's stark anti-conformist attitudes. Eschewing mainstream ethos, they have created something truly of their own, a strong subculture with its own structure, ideas and mores. While carving out their own niche meant to abandon notions of conformity within the mainstream, something very ironic has happened - the scene has become undeniably conformist in itself. How much punk music sounds the same? How many punks dress the same? Have nearly identical political views? It's something very common to subcultures - it starts off as a vibrant, diverse smorgasbord of ideas and sounds, and eventually succumbs to sameness and finding comfort in familiarity. Pioneers such as The Stooges and Black Flag never looked back and were such good bands not just because of their songwriting, riffs or any other quantifiable aspect of their music - what made them so great was innovation and the reach towards something more, something different.
Immortal Technique has a song called Beef and Broccoli, starting off with "look, let me make something abundantly clear to people who are so bereft of activities that they feel like they gotta comment on every one of mine", that lambasts the type of left-winger that feels like he can't be one of them because he enjoys eating meat. Surely ethics are a factor, but aggressively asserting an agenda down everyone's throats that is so blatantly subjective, will never be the most effective way to convince people of your logic. In the end all they'll hear is your anger. Tech makes this clear with the line "I like beef & broccoli motherfucker, mind your goddamn business".