Fat liberation is a social justice movement that works against anti-fat bias, oppression, and discrimination. Fat liberation is a radical alternative to body positivity – a movement based largely in appearance that is often appropriated by the mainstream – and affirms the value of all people, regardless of their weight or health. Fat liberation understands anti-fat bias and discrimination to have strong roots in anti-Black racism, colonialism, and classism, and that anti-fat bias and discrimination are routinely practiced without recrimination. Fat liberation seeks to identify and alleviate systemic anti-fat bias and individual prejudice, and to unlearn internalized fat bias and oppression. Fat liberation is a struggle tied to other intersectional struggles against oppression, and stands shoulder-to-shoulder with struggles against racism, misogyny, homophobia, transphobia, ageism, ableism, and others. Fat liberation not only seeks to normalize fat bodies, but to celebrate them.