Ring in the Fourth of July with a quartet of politically charged punk bands, all of whom are quite good. Flasher’s brooding self-titled cassette was released on Sister Polygon Records back in April, and its seven tracks smartly navigate the power dynamics of personal relationships. Baltimore’s Post Pink recently released I Believe You, OK (also on Sister Polygon), the sort of yelly back-and-forth punk album whose longest track clocks in at 2:12. Boston’s Kominas are Pakistani-Americans who have a way with a song title. (“See Something Say Something,” “Sharia Law In The USA,” “Wild Nights In Guantanamo Bay,” etc.) Musically they’re a little too nineties alt-rock for me, although I imagine they’re better live. Local sextet Downtown Boys round out the bill.