Conversation

consider writing to Luigi to take the meme posting and the jokes to the next level of directly expressing your support to him

tips on how to write prisoners here: https://www.liberationlib.org/become-a-penpal.html

write to:
Luigi Mangione 52503-511
MDC Brooklyn
PO Box 392002
Brooklyn, NY 11232

assume all your letters will be read by the feds before he gets to read them. accordingly, consider using a pen name (and tell him, "my pen name is XYZ"), and a return address that isn't your home.

check the mail guidelines before you write/send to ensure your letters get to Luigi:
https://www.jailexchange.com/federal-prisons/new-york/mdc-brooklyn/mail-an-inmate