Brown ground beef till no longer pink, drain, and add to crock pot. To the crock pot add the bell pepper, onion, diced tomatoes, tomato puree, and all the beans. (drain about 85% of the liquid from the beans before adding to the slow cooker.) Add all the spices, and give it a good stir. If you like it more spicy add a tbsp of your favorite hot sauce. Cover and cook on low for 6-8 hours.