By THÉRÈSE MARGOLIS     A colorful pageant of hundreds of oversized winged dragons, gargantuan multihued insects and superhuman-sized Catrina walking-dead dolls took to the streets in Mexico City on Saturday, Oct. 22, as the now-iconic Monumental Alebrijes Parade got underway at the capital’s Zócalo central plaza shortly after 10 a.m. The parade, which was heralded in a concert of spooky-toned music