“Amongst the acts done by permission of the law, for the advancement of public justice, may be reckoned those of the officer who in the execution of his office, either in a civil or criminal case, kills a person who assaults or resists him. The resistance will justify the officer in proceeding to the last extremity. So that in all cases, whether civil or criminal, where persons have a right to arrest and imprison, and using the proper means for that purpose, are resisted, in so doing they may repel force with force, and need not give back, and, if the party making resistance is unavoidably killed in the struggle, this homicide is justifiable.” – Justice Craig, Supreme Court of Illinois, Lynn v. People, 170 Ill. 527 (1897)