Yo La Tengo’s latest record is confrontationally titled I Am Not Afraid of You and I Will Beat Your Ass. Last night at the 9:30 Club, they did seem like a band unafraid, comfortable in their skin, and enjoying being on the road again. Whether or not they’re going to beat anyone’s ass is less certain, even just musically. The set was heavy on new material. During one of the band’s few audience interactions…