The principles of justice are chosen behind a veil of ignorance.
I'm concerned about the survival, historically, of constitutional democracy.
Thus I assume that to each according to his threat advantage is not a conception of justice.
Clearly when the liberties are left unrestricted they collide with one another.
Public reason arguments can be good or bad just like other arguments.
A political conception covers the right to vote, the political virtues, and the good of political life, but it doesn't intend to cover anything else.