The rule of the mob or the disorderly classes; violent usurpation of authority by the rabble; lynch-law.(noun)
The Century Dictionary (Public Domain)
Use "mob-law" in a sentence
"This indisposition to mix in politics probably arises both from the coarse abuse which assails public men, and from the admitted inability, under present circumstances, to stem the tide of corrupt practices, mob-law, and intimidation, which are placing the United States under a tyranny as severe as that of any privileged class — the despotism of a turbulent and unenlightened majority."
"A little blunder in the administration of justice by Southern mob-law; but nothing to speak of."
"They can hardly indite a leading article, or make a stump speech, without showing their proclivities to mob-law."