If they want a social equality movement in omegaverse how about O.M.A.M omega male acceptance movement of the A.F.E.P alpha female equality party. D.E.M Dynamic equalist movement. The D.E.M flag is red, blue and gold. Blue background for the betas with a golden heart for the omegas outlined in red for the alphas. (feel free you write the D.E.M into any of your fanfics guys)
I think it could be some good material to some very specific fanfics, I myself have wondered what a equivalent of the LGBT community would be called in ABO and how this individuals would interact with the rest of society. Is actually a pretty cool topic that is not as much talked about outside of a SJW mind set. As for movements, parties and flags, I particularly don’t like the idea itself. I think that people don’t need to subscribe to any sort of movement or political party to make a difference, actually that they don’t need to subscribe to these at all, really. I think that if every individual just tried to be a decent human being, confronting new things with as much kindness and civil behaviour as possible, always trying to be open minded and respecting the civil and human rights of each other there wouldn’t be the need for them. Actually the hivemind mentality would be way less prevalent. Since people just validate each other as individuals and not as numbers in a group. And this is something I like to bring even to my ABO (or just regular) fictional universes and interpretations. Unfortunately I know it is nothing but an unarchievable ideal. Still it is an interesting area to be explored and I’d like to see more of it for sure ^^