There is no modern liberalism.  Neo-liberals like the Clintons took their place and for them its all about the donations from the capitalists.  As for liberty, that is libertarianism, not liberalism.  The whole FDA is in the way meme is over.  Obama fixed that problem to the extent he could without hurting patient safety.  

Conservative justices found privacy and extended it to contraception, abortion (Brennan was an Ike appointee), sodomy and gay marriage (Kennedy was a Reagan appointee).  They could have used the partial birth abortion case to ban abortion, as Scalia insisted (and which was the real plan for passing the bill) except that Kennedy, Roberts (Bush) and Alito (Bush) would not.  Libertarians all.