A Theory about Left vs. Right
One possible description of Left vs. Right:
The Left wants to break down barriers between places and put up barriers between times. The Right wants to break down barriers between times and put up barriers between places.
The phrase “barriers between times” might be hard to decipher. You can think of destroying or denouncing traditions as putting a barrier between the present and the past. You can also think of birth control or abortion as putting a barrier between the present and the future. Leftists claim to be loyal to the future but only on the condition that it's like the present but only more so.
One consequence: The reaction of the Right to suggestions that judges should take the laws of other places into account resembles the reaction of the Left to suggestions that judges should take the laws of other times into account.