Super article, short, just read it. It covers the obvious -- progressives find that rights the constitution says nothing about (abortion) apply to all ... federal, state, city, but rights that the constitution directly enumerates (guns), are questionable at all levels.
How can you spot a legal progressive? A legal progressive is someone who believes rights that are not stated in the Constitution, but inferred or extrapolated, should be given more weight than rights plainly enumerated.
A legal progressive is someone who knows there is a fundamental constitutional right to gay marriage, for example, even though the Constitution says nothing directly about marriage, but that a law-abiding individual has no right to own a gun, even though the Constitution clearly states that "the right of the people to keep and bear arms shall not be infringed."