There is some serious bad blood between former co-stars Sean Penn and Maria Conchita Alonso. The two actors, who appeared together in Colors in 1988, got into a heated shouting contest at the Los Angeles airport over the weekend. The conflict between the two stems from Penn's support of Venezuelan president Hugo Chavez. Alonso, meanwhile, was raised in Venezuela and is opposed to the socialist. This isn't the first time the Penn and Alonso have come head to head over their difference of opinions. Back in 2010, Alonso penned an open letter bashing the Oscar-winning actor for his support of Chavez. Their feud reignited after some pretty serious name calling this time. During an interview with WMAL, Alonso described the incident, "I said, 'You are a communist, Sean Penn.' He said, 'You are a pig!' So I said, 'And you are a communist a**hole! Is it great to live the way you do as a communist?'" Although she stopped short of saying she was wrong, Alonso admitted she shouldn't have called him an a-hole. Alonso issued an apology "for calling Sean Penn an a**hole. He is an intelligent man. But if someone calls me a pig, I am not going to turn the other cheek. But I don't regret calling him a communist."