Wikileaks is the greatest example of hacktivists and whistle-blowers and it will be hard to ever beat. Those being exposed hated it and were condemning it to be illegal (even though the things that they did that were being exposed were illegal) and the mainstream audience loved it because all that was being hidden was coming to the surface.
Some agree that it was for the best that the whistle-blowers shared this private content and information but others believe that it was probably best kept secret for many reasons including not wanting to accept the illegal activity of people they like. It made a lot of people accept that they had been deceived and that everything isn’t as it seems. The amount of memes created about Hilary Clinton who was massively effected by Wikileaks is massive and the more memes = the bigger the effect. Memes speak the truth!