Two quotes (hauled from this Dec 2012 post) that are worth remembering.
“Find out just what people will submit to, and you have found out the exact amount of injustice and wrong which will be imposed upon them . . . The limits of tyrants are prescribed by the endurance of those whom they oppress.” Frederick Douglass (1818 – 1895), American abolitionist.
“A nation of sheep will beget a government of wolves.” Edward R Murrow (1908 – 1965), American journalist & broadcaster.