Article continues below advertisementMaluma is protective of his younger fans!Over the weekend, the 31-year-old Colombian superstar stopped his concert in Mexico City to call out a mother in the crowd who brought a baby without any ear protection. The show was part of the last stretch of his +Pretty +Dirty World Tour, wrapping on August 16.Article continues below advertisement"With all due respect... how old are they?" Maluma asked in a now-viral video. "A year old? Less? A year.