Pasta Puttanesca

Name: Pasta Puttanesca
Ingredients: 2 tablespoons olive oil; 3 cloves garlic (thinly sliced); One 2-ounce can anchovy fillets; 1/2 teaspoon crushed red pepper flakes (or more if you like extra heat); 1 tablespoon tomato paste; One 28-ounce can San Marzano tomatoes; 1 cup pitted and halved oil-cured black olives; 2 tablespoons capers (rinsed well if salt-packed); 1 tablespoon chopped fresh oregano (plus more for garnish); kosher salt; 3/4 pound linguine; 1/2 cup chopped flat-leaf Italian parsley (plus more for garnish)