By Bianca Betancourt, CNN. Photographs by David Dee Delgado for CNN. (CNN) — For a mile-long stretch of Bushwick, Brooklyn, a sea of red, white and blue floods the streets. One corner boasts a DIY speaker setup blasting old-school reggaeton courtesy of Tego Calderón and Plan B, another plays throwback salsa from Héctor Lavoe and El Gran Combo. Booming horns pulse through the air; vendors pour “piragua” snow cones and serve watermelon and coconut…