案件回放:张大妈现年59岁,和丈夫老柳都是退休工人。两人退休后,经常积极参与街道办事处(以下简称街道办)组织的植树造林、打扫卫生、清理楼区周边环境等公益活动。两人膝下无子,将全部精神都寄托在了公益活动中。前不久,他们所在小区的居民委员会根据街道 Case playback: Aunty Zhang is 59 years old, and her husband Liu is retired workers. After retiring, they often take an active part in public welfare activities such as afforestation organized by sub-district offices (hereinafter referred to as sub-district offices), cleaning, and cleaning up the environment around the buildings. Both of them have no child under their knees, and have placed all their spirits in public welfare activities. Not long ago, the neighborhood committee of their district was based on the street