Rule #0: Rules #1 and #2 of the internet still apply. Your memes are not, at this juncture, something that the real world can appreciate. Although meme speak between fellow Anonymous is acceptable, focus on the target and keep it to a minimum.
Rule #1: Stay cool.
Rule #2: Stay cool, especially when harassed. You are an ambassador of Anonymous. Although individuals trying to disrupt your demonstration will get on your nerves, you must not lose your temper. Doing so will harm the protest and tarnish the reputation of Anonymous.
Wikipedia cite:
{{cite news | author = Church0fScientology | title = Code of Conduct | url = https://www.youtube.com/watch?v=-063clxiB8I | work = YouTube | date = February 1, 2008 | accessdate = June 12, 2017 }}
Code of Conduct February 1, 2008,
Code of Conduct February 1, 2008,