Any person who, without lawful excuse, the burden
of proof whereof shall lie upon him, utters, prints, publishes any words, or does any
act or thing, calculated to
bring into contempt, or to excite
defiance of or disobedience to, the lawful authority
of a public officer or any class
of public officers is guilty
of an offence and is liable to imprisonment for a term not exceeding three years.