Henderson has participated in social justice coalitions and developed strategies for local and international civil and human rights policies, among other public actions.

[citation needed] He has attended human rights conferences in Geneva, Switzerland, Germany, South Africa, Israel, and Chile.

[citation needed] He also advocated for fair-chance hiring practices at banks to give ex-offenders a chance at securing work.

[citation needed] As of February 2021, Henderson's volunteer activities focused on improving educational and financial opportunities for disadvantaged populations.

[6] He directed the organization’s government affairs and national legislative programs; and served as associate director of the Washington office of the American Civil Liberties Union.