Mix black beans, corn, red onion, salsa, olive oil, cilantro, garlic, lemon juice, vinegar, cumin, salt, and black pepper in a large bowl. Cover and refrigerate at least 1 hour to 2 days. Serve chilled.
NUTRITION FACT
Per Serving: 221 calories; protein 6.9g; carbohydrates 25.3g; fat 11.6g; sodium 805.2mg.