 <translate> To answer the above question, the relevant sentence is: A song about heroin addiction, it is considered a fan favourite, and is one of U2's most frequently performed songs in concert.
Therefore, the answer is heroin addiction. <yor> Lati dahun ibeere ti o wa loke, gbolohun ti o yẹ ni: Orin kan nipa afẹsodi heroin, o jẹ ayanfẹ ayanfẹ, ati pe o jẹ ọkan ninu awọn orin U2 ti a ṣe ni igbagbogbo ni ere orin. Nítorí náà, ìdáhùn sí ìbéèrè yìí ni pé heroin ti di bárakú. 