Haring's work demonstrates political and personal influences. References to his sexual orientation are apparent throughout his work, and his journals confirm its impact on his work. There are symbolic allusions to the AIDS epidemic in some of his later pieces, such as "Untitled (cat. no. 27)", "Silence=Death" and his sketch "Weeping Woman". In some of his works—including cat. no. 27—the symbolism is subtle, but he also produced some blatantly activist works. "Silence=Death", which mirrors the ACT UP poster and uses its motto, is almost universally agreed upon as a work of HIV/AIDS activism.