What Lesson is there in "Day of the Dead"?

Roman Catholicism			83%
Other Christian			10%
Other Religion			0.2%
No religion			5%
Unspecified			3%

In a country where 93% claim the Christian Label....well, one can see how many will follow anything that comes along in the future (like the mark of the beast) or anything from the past (such as old fashioned pagan rituals).....
For the living know that they shall die: but the dead know not any thing,...
Ecclesiastes 9:5

"Day of the Dead originated several thousand years ago with the Aztec, Toltec, and other Nahua

people, who considered mourning the dead disrespectful. For these pre-Hispanic cultures, death was a natural phase in life’s long continuum. The dead were still members of the community, kept alive in memory and spirit—and during Día de los Muertos, they temporarily returned to Earth. Today’s Día de los Muertos celebration is a mash-up of pre-Hispanic religious rites and Christian feasts. It takes place on November 1 and 2—All Saints’ Day and All Souls’ Day on the Catholic calendar—around the time of the fall maize harvest.

Altar
The centerpiece of the celebration is an altar, or ofrenda, built in private homes and cemeteries.....they’re meant to welcome spirits back to the realm of the living. As such, they’re loaded with offerings—water to quench thirst after the long journey, food, family photos, and a candle for each dead relative. Scattered from altar to gravesite, marigold petals guide wandering souls back to their place of rest.
You work up a mighty hunger and thirst traveling from the spirit world back to the realm of the living. At least that’s the traditional belief in Mexico. Some families place their dead loved one’s

favorite meal on the altar.

Costumes
Day of the Dead is an extremely social holiday that spills into streets and public squares at all hours of the day and night. Dressing up as skeletons is part of the fun. People of all ages have their faces artfully painted to resemble skulls, and, mimicking the calavera Catrina, they don suits and fancy dresses. Many revelers wear shells or other noisemakers to amp up the excitement—and also possibly to rouse the dead and keep them close during the fun." NationalGeographic