Drain and rinse the canned black beans under cold water until the water runs clear, then drain thoroughly and place in a large mixing bowl.
Finely chop the red onion and add it to the bowl with the beans, creating a fragrant, crisp aroma as you work.
Rinse and chop the cilantro finely, then sprinkle over the bowl for a fresh, herbal scent and vibrant green flecks.
Halve the cherry tomatoes and add them to the bowl, adding bursts of juicy sweetness and color.
Using a juicer or hand-squeezer, extract the juice from two fresh limes, then pour the bright, citrusy liquid over the ingredients.
Drizzle the olive oil over the mixture, then sprinkle in the cumin, adding a warm, smoky aroma as you toss everything gently.
Add salt and freshly ground pepper to taste, then toss the salad thoroughly to coat all ingredients evenly, watching the vibrant colors meld together.
Cover the bowl and refrigerate for at least 30 minutes to allow the flavors to meld and the salad to chill.
Remove the salad from the fridge, give it a final gentle toss, and taste to adjust seasoning if needed.
Serve the vibrant black bean salad chilled, garnished with extra cilantro or lime wedges if desired, and enjoy its fresh, bold flavors.