Why is everybody judging the characters?
First of all, sorry for mistakes as I'm not mother tongue English. I've watched two seasons and then I ended up reading comments because I felt confused and wanted to see what other people thought. Well, actually I think that noone should watch this series in order to be coherent with the message: Internet/technology/propaganda is against human nature. But I'm watching it, and so you are, so let's talk about it.
I think it's not about what we would do in any of the suggested situations. They don't ask us to make choices. It is just a portrait of the contemporary society and a landscape of where we are NOW (even in the 1S2E - dystopic story): people guided by somebody who wants us to behave in a certain mode for certain reasons. Behave as a mass, not as individuals. (And I'm not into conspiracy theories).
Why should we judge the character of "White bear" episode? Do we have the right to do so? Do we have the right to say: ok, she did it, so the punishment fits. I don't think this is the main issue of the episode: what the authors wanted to say is that justice has become an inhuman instrument of the system that wants us to entertain and have fun instead of thinking with our own minds and making ethical choices.
This series itself is a simplification of ethics and morality. If one would really care about the moral part of the series they should read philosophers/writers of the past, who are much deeper and humane than the directors of Black Mirror episodes. I must still admit that Black Mirror is really amazing... and disturbing.