Roughly chop all the vegetables through bell peppers.
In batches, place the vegetables in the food processor and pulse until you reach the desired consistency. Think finely chopped salsa. Use a spatula to scrape down the sides so that all ingredients are equally sized. See pictures for details.
Pour into a large bowl and continue until all vegetables are chopped.
Stir in cilantro, parsley, V8, champagne vinegar and salt.
Refrigerate for 2 hours before serving.
Meanwhile, season shrimp with salt, pepper and a sprinkle of cayenne. Heat a skillet over medium high heat. Spray with Pam and cook shrimp 2 minutes per side. Let cool completely and refrigerate until chilled.
Dice shrimp to use as a garnish.
Serve in chilled bowls with cubed avocado and shrimp on top.