If Anonymous follows through with this it could push the cartel to try and engage in some attribution ops of their own.
“An international group of online hackers is warning a Mexican drug cartel to release one of its members, kidnapped from a street protest, or it will publish the identities and addresses of the syndicate’s associates, from corrupt police to taxi drivers, as well as reveal the syndicates’ businesses.”
(Online hackers threaten to expose cartel’s secrets – Houston Chronicle)