They can't suppress everyone flooding the system with the same message.
OK, but what message? I've seen a few announcements saying that there will be a protest, but the best "message" I've seen is "Say No To... *gestures broadly*".
That's not exactly a cohesive protest.
Edit: ok, this post has more information and plenty of discussion. Maybe I'm just subscribed to the wrong communities, but it seems like every post was just some variation of this image and no further information.