Alexander Hamilton, James Madison, and John Jay published a series of essays beginning in October 1787 to short-circuit the attacks on the newly proposed Constitution during the ratification period. In Federalist I, Hamilton gave an introduction and warned of the dangers of seeing the new form of government through the intolerant spirit of political partisanship.
Hamilton provides a 229-year-old warning that should be headed today (emphasis has been added):
"So numerous indeed and so powerful are the causes which serve to give a false bias to the judgment, that we, upon many occasions, see wise and good men on the wrong as well as the right side of questions of the first magnitude to society. This circumstance, if duly attended to, would furnish a lesson of moderation to those who are ever so thoroughly persuaded of their being in the right in any controversy. And a further reason for caution, in this respect, might be drawn from the reflection that we are not always sure that those who advocate the truth are influenced by purer principles than their antagonists. Ambition, avarice, personal animosity, party opposition, and many other motives not more laudable than these, are apt to operate as well upon those who support as those who oppose the right side of a question. Were there not even these inducements to moderation, nothing could be more ill-judged than the intolerant spirit which has at all time characterized political parties. For in politics, as in religion, it is equally absurd to aim at making proselytes by fire and sword. Heresies in either can rarely be cured by persecution.
"... A torrent of angry and malignant passions will be let loose. To judge from the conduct of the opposite parties, we shall be led to conclude that they will mutually hope to evince the justness of their opinions, and to increase the number of their converts by the loudness of their declamations and by the bitterness of their invectives.
"... I have had an eye, my fellow-citizens, to putting you upon your guard against all attempts, from whatever quarter, to influence your decision in a matter of the utmost moment to your welfare by any impressions other than those which may result from the evidence of truth."