‘Positive *liberty’ is supposed to be
when you are able to do whatever you (ought to) want to do, rather than merely not
being actively prevented from doing something (which is ‘negative liberty’).
The main problem with ‘positive liberty’ is that it appears to be a tendentious
attempt to belittle the *liberal or *libertarian conception of liberty. For ‘positive
liberty’ looks much more like ability or, valuable/approved, opportunity (in
many cases it is a *privilege at the *tax victims’ expense, who
thereby become underprivileged). It is conceptually confusing to try to dress
these up as the kind of ‘liberty’ that really matters, rather than to argue for
their importance independently and admit that liberty might need to be
constrained in order to promote them. It smacks of *politically-correct

A Dictionary of Libertarianism