Richard Stengel: “Why America needs a hate speech law”
washingtonpost.com
washingtonpost.com
There's no engineering here.
The Bill of Rights are meant as enumerated inherent ("god-given") rights.
They're not engineered for anything other than codifying the natural rights of people.
His argument invokes the idea of a "marketplace of idea" and "truth" which essentially reduces natural rights to matters of utility, when they're more of a moral declaration that free people can speak.