in practical ways -- simply refusing to keep data on paper, as the most obvious. Librarians are traditionally underappreciated - as befits the antiintellectual nature of Puritan mobs.
In many small towns, and during McCarthy era especially [watch it, as it returns] - the local librarian was almost the sole representative of 'free enquiry'; most tactfully - a few overtly. I have some experience of just such.
Maligning these folks is - stupid. Y'know?