"HADY SY Nearly all the big, unframed photographs in Sy?s show are adapted from X-rays of the artist himself, and in several of them he looms before us as a life-size skeleton: a commanding, terrifying figure isolated against a solid black or white background. The work deals both explicitly and metaphorically with issues of race, war, religious belief, and gun violence, and has the impact of classic propaganda: sharp, unnerving, and graphically concise. For Sy, the skeletal figure is both life and death?the transcendent soul and a robotic, gun-wielding menace, each struggling for the upper hand. Through Jan. 20. (Ethan Cohen, 18 Jay St. 212-625-1250.)"