Justin Bieber says he's sorry and the hopes Argentines can forgive him. Now he may need to tell that to some judges. The 19-year-old pop star faces two criminal complaints after his wild tour in Argentina, in addition to trouble with police for allegedly spraying graffiti in Brazil and Colombia. One Argentine lawyer is accusing Bieber of sending bodyguards to attack a photographer outside a Buenos Aires nightclub. Another accuses him of defiling the national symbol by dragging two Argentine flags off stage with his feet and a microphone stand. If tried and convicted in the flag incident, that could mean up to four years in prison. Bieber tweeted Thursday that he's sorry. He says he "would never do anything to disrespect Argentina."