Punk rock is here to stay, and what’s more punk rock than a free punk show in downtown San Jose? The Caravan Lounge hosts a free show with three local bands this Friday. Anti-Social (not to be confused with the ’70s UK punk band Anti-Social) are the headliners, bringing together nearly 40 years of experience and a host of unbridled energy to the stage. Openers are F.U.X., a heavy metal band that reminds fans they are “not afraid to shred, headbang and thrash!” The Uncorrupted, a new punk band, rounds out the lineup.