Today we honor a saint who played a pivotal role in the conversion of Ireland to the One True Faith. As a result of that conversion many monasteries were built and armies of priests and religious went forth to spread the Faith; the United States was a beneficiary of their efforts.
Because I abhor the adulteration of such feast days with sentimentality, I do not believe it appropriate to "muddy the waters" by trying to make such feast days about celebrating ethnicity. We honor St. Patrick, a very holy man. We don't do so my pouring green food dye into copious amounts of beer and then consuming the same to the point of sinful drunkedness. Similarly, the Feast of Our Lady of Guadalupe is not about the Latino culture. Leave the feastdays alone and unpolluted by trivialities. I've posted before on all this here and here.
It is said that St. Patrick drove serpents from Ireland. Let us pray to him that the serpents of abortion, contraception, homosexuality and other mortal sins be driven from our culture and that all be converted to Jesus Christ and His One True Church.