equalism (n)

advocacy or support for the principles of fairness. equal opportunity and respect for difference:
“She embraced equalism in pursuit of less discord and greater harmony”

equalist (adj)

believing in or based on the principles of fairness, equal opportunity and respect for difference:
“Consider a balanced and respectful, more equalist view.”

equalist (n)

a person who advocates or supports the principles of fairness, equal opportunity and respect for difference:
“He is a social and political equalist.”