Folk punk as a genre to me is the essence of protest.

AJJ is among my favourites! Some I would recommend looking into:

• Pat the Bunny and his related acts -> Ramshackle Glory, WIngnut Dishwashers Union, Johnny Hobo and the Freight Trains
• Mischief Brew (absolute must - my most beloved song of all time is their Coffee God and Cigarettes) + related act The Orphans (especially For an Old Kentucky Anarchist)
• Days N Daze
• The Orphans
• Blackbird Raum
• The Taxpayers

Best of wishes! Happy listening :)

Defiance Ohio - Calling Old Friends HELL YEAH, have had this song on my mind for the past while... In fact, it is the inspiration for my lemmy username!

PSP Daxter (2006) - should work smoothly on mobiles as well!