Non-resistance, as meant, for example, by Jesus, is not necessarily about an external action. It's possible to inwardly practice non-resistance while engaging in the most powerful resistance to the forces of racism and sexism; the forces of fear, anger, ignorance, prejudice, exploitation and more.
It's also an entirely practical action. I remember Thich Nhat Hanh at a workshop telling us how he carried a wounded friend across a field as bullets were whizzing past him. He did not practice "non resistance" by leaving his friend where he was, wounded, about to die.
However, he also emphasized the fact that inwardly, he maintained (effortlessly, as I understood it, from his years of contemplative practice) an **inward** stance of non resistance toward the soldiers who had shot his friend.