Since this IS a protest, Organizers, make sure you have a local activist legal eagle give a "know your rights" training before you assemble. Also the SCOTUS has just muddied the waters a bit with the new 5A ruling on the Right To Remain Silent, as in when you're not Mirandized, it looks like you DO NOT have the right to remain silent, so you need to INSIST on Miranda warnings ASAP, so politely and forcefully insist that any officer that actually detains you to apprise you of your rights and don't take no for an answer. THEN and only then can you do the normal activist thing of talking about anything under the sun except the protest :)