MacArthur joined 11 funders to establish the Democracy Frontlines Fund, a donor advised fund by Amalgamated Foundation, to provide $36 million in sustained support to 10 grassroots organizations advocating for equitable change and civic engagement. The fund is a response to the United States’ pervasive racial injustice and over three years will create a learning community to strengthen philanthropic support for racial justice. MacArthur contributed support for Black-led organizations mobilizing to fight voter suppression policies or enhance community safety. Organizations receiving support include: