I'm not Catholic, though I did grow up around them and often joined in Easter celebrations. My perception* is that it is a day of joy, celebration, and fun. The Catholics I hung out with would've probably busted a gut laughing at a bunch of zombies lurching past their picnic.

I'd personally be much more offended by a zombie march on Ash Wednesday, for example.


[* I mostly knew Italian Catholics. In HS, I knew a lot more Greek Orthodox folks, and their practices were often different. But Easter was also a different day, so it might not apply here.]