"Know Your Enemy" is a time-tested axiom.  Here is a link to our Opponent's web site:  https://www.ricagv.org/

Click on the "Take Action Now" button at to top, left to use their site's features for your own purposes.  For example, one can use their handy links to access your State Reps and Sens to send your own e-mails.  One can use their telephone links to deliver phone messages to same folks.  Naturally I suggest modifying the helpful "scripts" they provide.  There's even a list of local newspapers, as well as contact info, in case you want to complain about something like a biased news story or an editorial, or in case you want to write your own "Letter to the Editor".

Also, take a look at the orgs that support the Anti-Gunners.  If you're a member of one of them, give the leaders of the supporting org some polite push-back.