The main Passover theme is freedom. Many Jewish vegetarians advocate that we commemorate the redemption of our ancestors from slavery by ending the current slavery to harmful eating habits through the adoption of vegetarian diets. Passover is the holiday of springtime, a time of nature's renewal. It also commemmorates God's supremacy over the forces of nature. In contrast, modern intensive livestock agriculture and animal-centered diets have many negative effects on the environment, including air and water pollution, soil erosion and depletion, the destruction of tropical rain forests and other habitats, and contributions to global warming.
Jewish vegetarians view their diet as a practical way to put Jewish values into practice.
They also have a video casette that describes a vegetarian seder.