If we voice our disapproval here, we're just moaning to ourselves, nobody else gives a shit. if city matters, 1894 group etc put out statements saying they're disappointed etc maybe it gets a bit more coverage and might make the evening news but it largely reaches the same people and gets ignored.
if we have a full protest and banners in the champions league semi final against the biggest club in the world with probably 100's of millions watching on, we get our point across, it shames city and the global media pick up on it and they cannot ignore it. That's the only way it even registers with the people that decide the price.
We have 1 chance here to make ourselves heard, we have to take it and I'd hope the fan groups which do a great job of organising things involving displays and events could rally support and get something sorted against madrid to address this. this is bigger than upsetting the vibe of the crowd in an important game and has to be done.