It is easy to implement, is not cost-prohibitive, and provides unbiased randomly sampled data in an ethically acceptable manner.

The acts made in the first Parliament of our most high and dread soveraigne Charles [I], by the grace of God, King of Great Britaine, France, and Ireland, defender of the faith, &c. […] [book title]

Ne ever is he wont on ought to feed / But todes and frogs, his pasture poysonous, / Which in his cold complexion doe breed / A filthy blood […]

to designate the rioters who are to be arrested