originally means to get rid of the malaria-carrying mosquitoes by draining the swamp. Figuratively, means "to exterminate something that is harmful" or anything that most of the people hate such as corruption or government waste.
used to refer disparagingly to the mainstream media. traditional print and broadcast media, when regarded as lacking the fairness, creativity, etc., of independent online news sources.
1) Someone whose behaviour does not conform to society’s norms. It can be applied to a broad range of people, from those who are slightly eccentric to others who have completely lost touch with reality and need psychiatric help.