Last night, authorities in Boston evacuated an area near the finish line of the Boston marathon, one year to the day that bombings rocked the city. A man identified as a 25-year-old, self-described “performance artist” wore a black veil and shouted “Boston strong” before leaving a bag at the scene. The man, Kayvon Edson, told police that the bag contained a rice cooker and confetti. Bomb squads detonated the backpack, along with another abandoned bag that they believed contained photography equipment as a precaution. Edson, whose various blogs are filled with strange postings seemingly sympathetic to Boston Bombing suspect Dzhokhar Tsarnaev, was arrested and charged with disturbing the peace, disorderly conduct, and possession of a hoax device. This year’s marathon will take place on Monday …