do–good·er 
/ˈdu:ˌgʊdɚ/ noun
plural do–good·ers /ˈdu:ˌgʊdɚ/ noun [count] disapproving : someone whose desire and effort to help people (such as poor people) is regarded as wrong, annoying, useless, etc.
▪ He dismisses his critics as a bunch of politically correct do-gooders.
▪ He dismisses his critics as a bunch of politically correct do-gooders.
