No, The Acorn is not in any way related to nefarious videos which may have surfaced. They're a band from Canada, and this is the video for "Crooked Legs," from their 2007 album Glory Hope Mountain:
Glory Hope Mountain is a concept album about the lead singer's mother and her journey from Honduras to Canada. The album name is a rough translation of her Spanish name, Gloria Esperanza Montoya. In this song, she's apparently escaping from an abusive father and violent family background under cover of darkness. It's a very compelling and complex album, and one I highly recommend. It's easy to make a concept album sound cheesy, but to be such a young band (this is their first full-length LP), The Acorn pulls this one off quite expertly. "Hold Your Breath" and "Antenna" are also standouts on this record.