The idea that there is no problem with surveillance as long as you have nothing to hide simply points to the complacency of the liberal view of freedom by contrast with the republican one. The liberal thinks that you are free so long as you are not coerced. The republican agrees, of course, that if you are coerced then you are not free. But freedom for the republican consists not in being free from coercion in respect of some action, but rather in being free from the possibility of coercion in respect of it.
* Quentin Skinner, “Liberty, Liberalism and Surveillance: a historic overview”