What is the difference between a right and a privilege?

You do not have to ask to exercise a Right. You do have to ask to exercise a privilege. You have a Right to eat. You do not have a Right to eat my food. You have to barter (free market) or I can give it to you (charity) A Right cannot violate the Rights of another. My food is my property. When I give it to you or you buy it from me it becomes your property. Otherwise, if you take it, you violate my Right to property.

You cannot hire or elect someone to violate my Rights. The purpose of government is to protect Rights.

"We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.--That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed," - U.S. Declaration of Independence.

"The enumeration in the Constitution, of certain rights, shall not be construed to deny or disparage others retained by the people." - Amendment IX

The U. S. Government has been violating the Rights of the people for many years. You have a Right to Contract. Yet the Contract between a bond hold and the car companies were violated by the government. You have a Right to a fair trial, but over-zealous prosecutors and police may wrongly get you convicted. You have a Right to Travel. This has been upheld in the courts.

"The right of the citizen to travel upon the public highways and to transport his property thereon, either by carriage or by automobile, is not a mere privilege which a city may prohibit or permit at will, but a common law right which he has under the right to life, liberty, and the pursuit of happiness." Thompson v. Smith, 154 SE 579.