He has also served as a paralegal on other intelligence abuse and civil liberties cases filed against local police, the FBI, CIA and Military Intelligence on behalf of groups such as the Spanish Action Committee of Chicago, National Lawyers Guild, American Indian Movement, Socialist Workers Party, Christic Institute, and American Friends Service Committee.
Berlet is a paralegal member of the National Lawyers Guild, was for several years an elected vice-president of the NLG, and currently serves as Co-chair of the NLG's Civil Liberties Committee. Berlet is a co-founder and member of the editorial board of the legal newsletter Police Misconduct and Civil Rights Law Report, published by Clark Boardman Callahan of New York. He works closely with the National Committee Against Repressive Legislation and for several years served on the board of advisors to the Chicago-based Bill of Rights Foundation.