Two quotes:

"But you are, perhaps, ready to ask, "What has this to do with the perpetuation of our political institutions?" I answer, it has much to do with it. Its direct consequences are, comparatively speaking, but a small evil; and much of its danger consists, in the proneness of our minds, to regard its direct, as its only consequences. Abstractly considered, the hanging of the gamblers at Vicksburg, was of but little consequence. They constitute a portion of population, that is worse than useless in any community; and their death, if no pernicious example be set by it, is never matter of reasonable regret with any one. If they were annually swept, from the stage of existence, by the plague or small pox, honest men would, perhaps, be much profited, by the operation.--Similar too, is the correct reasoning, in regard to the burning of the negro at St. Louis. He had forfeited his life, by the perpetration of an outrageous murder, upon one of the most worthy and respectable citizens of the city; and had not he died as he did, he must have died by the sentence of the law, in a very short time afterwards. As to him alone, it was as well the way it was, as it could otherwise have been.--But the example in either case, was fearful.--When men take it in their heads to day, to hang gamblers, or burn murderers, they should recollect, that, in the confusion usually attending such transactions, they will be as likely to hang or burn some one who is neither a gambler nor a murderer as one who is; and that, acting upon the example they set, the mob of to-morrow, may, and probably will, hang or burn some of them by the very same mistake. And not only so; the innocent, those who have ever set their faces against violations of law in every shape, alike with the guilty, fall victims to the ravages of mob law; and thus it goes on, step by step, till all the walls erected for the defense of the persons and property of individuals, are trodden down, and disregarded. But all this even, is not the full extent of the evil.--By such examples, by instances of the perpetrators of such acts going unpunished, the lawless in spirit, are encouraged to become lawless in practice; and having been used to no restraint, but dread of punishment, they thus become, absolutely unrestrained.--Having ever regarded Government as their deadliest bane, they make a jubilee of the suspension of its operations; and pray for nothing so much, as its total annihilation. While, on the other hand, good men, men who love tranquility, who desire to abide by the laws, and enjoy their benefits, who would gladly spill their blood in the defense of their country; seeing their property destroyed; their families insulted, and their lives endangered; their persons injured; and seeing nothing in prospect that forebodes a change for the better; become tired of, and disgusted with, a Government that offers them no protection; and are not much averse to a change in which they imagine they have nothing to lose. Thus, then, by the operation of this mobocractic spirit, which all must admit, is now abroad in the land, the strongest bulwark of any Government, and particularly of those constituted like ours, may effectually be broken down and destroyed--I mean the attachment of the People. Whenever this effect shall be produced among us; whenever the vicious portion of population shall be permitted to gather in bands of hundreds and thousands, and burn churches, ravage and rob provision-stores, throw printing presses into rivers, shoot editors, and hang and burn obnoxious persons at pleasure, and with impunity; depend on it, this Government cannot last. By such things, the feelings of the best citizens will become more or less alienated from it; and thus it will be left without friends, or with too few, and those few too weak, to make their friendship effectual. At such a time and under such circumstances, men of sufficient talent and ambition will not be wanting to seize the opportunity, strike the blow, and overturn that fair fabric, which for the last half century, has been the fondest hope, of the lovers of freedom, throughout the world."

Abraham Lincoln, Lyceum address

The next quote is from A Man for all seasons.

William Roper: So, now you give the Devil the benefit of law!

Sir Thomas More: Yes! What would you do? Cut a great road through the law to get after the Devil?

William Roper: Yes, I'd cut down every law in England to do that!

Sir Thomas More: Oh? And when the last law was down, and the Devil turned 'round on you, where would you hide, Roper, the laws all being flat? This country is planted thick with laws, from coast to coast, Man's laws, not God's! And if you cut them down, and you're just the man to do it, do you really think you could stand upright in the winds that would blow then? Yes, I'd give the Devil benefit of law, for my own safety's sake!

If we have learned anything from Trump's election, it is that people who we may think unlikely to come to power, can come to power. If we tear up our principles of free speech and rule of law to after the Nazis, what will we hide behind when would be authoritarians come to power? The principle of free speech is what allows people to protest Trump and for newspapers to criticize him. The rule of law makes the police protect even those protestors they disagree with from violence. Be careful what you wish for, you just might get it.