"Systemic oppression occurs a lot when someone makes their own decisions for others (especially in groups/communities/etc)."
A model that offers a detailed step-wise description of consensus process. See more here.
A strategy women On Obama’s staff used to made sure their voices were heard. "Women in meetings repeated each other’s ideas, credited the women who came up with them, and forced men to acknowledge that women had just as much to contribute." See more here.