The folks who bill themselves as modern punk, like Green Day, want everyone to know how cool they think big centralized government that tells everyone what to do is. Hard to take someone as a rebel when they’re telling you how awesome the master is.
If you really want to get the true spirit of punk (based on my experience it ranges between centrism and Trumpism), drop $10 and go to a 5-band showcase. Yea, you may hear some lousy acts but you'll likely see some great unsigned band that has more in common with you than Antifa.
Buy a CD for $5 and support the DIY approach...more than likely they're not slobbering over some bureaucrat for a NEA grant.
All of the guys that I grew up with in the early 80’s that were into punk, turned out to be staunch conservatives.