According to witnesses the banner read:
esto les va apasar a todos los Zetamierdas que sigan en veracruz la plaza ya tiene nuevo dueño ....G.N aki yace el ferras y su corte real
This will happen to all the Zeta shit that stay in Veracruz, the plaza has a new owner...G.N. (Gente Nueva). Here is el ferras and his royal court
Thanks for the accurate translation, SunTzuWu.