倾听人民呼声 汇聚人民智慧 下载“人民网+”客户端 给领导留言 扫码关注公众号 “领导留言板”客服邮箱:leader@people.cn People is a collective noun. Peoples is used when we talk about two or more.
When we talk about a specific group of people, we consider it as singular and therefore, no need to add s. He was always energetic and positive and he was a people person. What is the plural of people person?