Warning: Santurce, enraged, burns. In extreme cases, it has taken the form of a mass tragedy like the fire at Dupont Plaza in 1986. Many decades earlier, when my dwellings were made of wood, more than one house caught fire as a result of a neighborhood feud. Anger, however, didn’t always take the form of fire. Many street fights, fueled by alcohol, ended in blows and stabbings. Nowadays scores, more territorial and commercial, are settled with gunfire. But I, with my crab-eyes that see in all directions, know: today, as yesterday, domestic rage is the greatest hell.