There’s a phrase in Spanish: por qué pintar es lindo, which means “why painting is beautiful”. Walking around Buenos Aires’ Palermo Soho district, with its abundance of murals, you’ll soon understand why this saying has been adopted by a group of local street artists. Around here, the street art differs from that found in most other parts of the city. You won’t find so many tags and bombs (which rival gangs or crews traditionally use to mark their territory) or political…