http://veganfeministnetwork.com/single-issue-campaigns-are-the-white-feminism-of-animal-rights/

Elephants in some circuses have been banned, only to be moved to “breeding” facilities and replaced by camels. Orcas may be on the way out of sea parks, but dolphins, seals, and other prisoners quickly fill this vacancy. More chickens may be raised in “cage-free” facilities, but the demand for their eggs and flesh remains unchanged by a public whose conscience is assuaged by slick industry advertisements keen to promote this “healthful” and “humane” added-value to their products. Picking and choosing oppressions leaves many in the lurch. Veganism creates a much needed anti-speciesism framework to encapsulate the needs of all species, but the movement stigmatizes vegan education in favor of more glamorous, high-impact, and advertisable single-issues.

By singling out particular species as especially worthy of movement resources and public compassion, the Nonhuman Animal rights movement reinforces speciesism. It supports the notion that some species are more important and deserving than others.