Eventually you'll run into the problem of defining a lie. How about a half-truth? Lying by omission? The laws in most western countries allow for consequences

Eventually you'll run into the problem of defining a lie. How about a half-truth? Lying by omission? The laws in most western countries allow for consequences in cases of slander and libel or where a person directly seeks to sow hatred and division against minorites for instance, defined as hate speech. Even that last part is somewhat controversial in regards to free speech, as some people think there should be no limits on speech at all. I think the solution (or at least part of a solution) is to mandate open standards and transparency, especially when it touches politics. Provide federated social network standards that interoperate, instead of the walled gardens we have now.