Original sentence: Bill O'Reilly, who is frequently a target of Media Matters' criticisms, has accused them of "specializing in distorting comments made by politicians, pundits, and media people" while "smearing" those who do not agree with "left wing politics" such as like Joseph Lieberman
Edited sentence: Bill O'Reilly, who is frequently a target of Media Matters' criticisms, has accused them of "specializing in distorting comments made by politicians, pundits, and media people" while "smearing" those who do not agree with left wing politics including moderates like Joseph Lieberman