As a student and ardent believer in Rawlsian ideology let me say this about that.
According to Rawls society exists to make laws that balance the needs of the majority with that of the minority.
Rawls' idea, thought experiment, is this simplified.
Take 1 person from every race, creed, culture, and religion in the country that you live in. Sit them down at a table and "remove" all ignorances, preconceived notions, knowledge of station in life, etc.. Rawls called this the veil of ignorance.
They will then make the laws. Remove the veil. According to him then the laws will be balanced.
What we have in this country is an utter failure to recognize those laws that we have agreed to live by and order our lives by. Furthermore and Rawls makes allowances for this that individual societies, Little Havana for example, has "rules" that its people live by that seem to supersede the laws of the majority. This is wrong in all aspects. Rawls recognizes this and allows that certain "behaviors" are allowed but not a total usurpation of the laws of the majority.
Unless and until Little Havana wants to secede from the US they are bound by the laws that the majority decided would benefit and do the most good for the most people.
YMMV