Sweet mother of pearl, son! Someone run off with your cojones and your razon? "Day of the Dead" (three days, really: 10/31-11/2) is a mash-up of Christian Hallowtide triduum observances dating at least to the 5th century and pre-Colombian rituals. Thus it was, in part, a cultural appropriation by the people you culturally appropriated. Now it generates almost as many culturally-appropriated (unless the Aztecs were making plastic) trinkets as Christmas, which features that Greek-born heretic puncher St. Nicholas, usually dressed in fur-lined (aiyeeee! PETA!) northern European garb. No reason you can't re-appropriate DoD to your purposes. Now, lighten up on yourself and figure out how to continue to make a living appropriating the hyper-violent, moderately idiosyncratic culture of your adopted city.