"Why do I need to justify and/or explain anything that is my right to you, do-gooder?"
Because rights can be changed even if we don't want that to be possible. It's probably a good idea to have a good argument for why it shouldn't happen when they try.
Oh, he wants a good argument....Well, here goes...
Why do I need a reason to speak freely?
Why do I need a reason to freedom of the press?
Why do I need a reason to worship at the church of my choice or not worship at all?
Why do I need a reason to peaceably associate and assemble with people whom I want to peaceably associate and assemble with?
Why do I need a reason to petition my alleged betters for redress of grievances?
Why do I need a reason to know my accuser in legal proceedings?
Why do I need a reason to see a search warrant before my person, property, papers and effects are searched?
Why do I need a reason to demand trial by a jury of my peers?