You are wrong to think those limiting the freedoms of Americans to "Life, Liberty and the Pursuit of Happiness" is only on the Left side of the room. Which side has the "War on Drugs"? Anti-Gay and, of course, gay marriage? Abortion, "Blue Laws", bigamy and other laws limiting the freedoms of Americans? Dude, the more a political party moves towards an extreme, the more authoritarian it becomes. Democrats are just as bad.
Conspiracy theorists always want to make things more complicated than they are. Human nature is the foundation for everything in politics. The more to the L-R center a person or party moves, the freer the laws. The more to one side or the other a person or party moves, the more things they want to restrict and impose on all others.