Johnson is a proper noun, the surname of a person; mister is a common noun, a word for a male person. In the use, Mr. Johnson (abbreviated title), the noun Mister (Mr.) is used as a title for a specific person, a proper noun. Together they are a proper noun.
mister
The word Mr is an abbreviation. It is an abbreviation of the word mister.
a great big gorilla
adverb
what part of speech is beneath
mister
The word Mr is an abbreviation. It is an abbreviation of the word mister.
That burning the flag is allowed as part of free speech.
a great big gorilla
mister
Joseph is a noun. The title Mr is usually considered part of the name.
Mr. King is a person's name, which makes it a proper noun. Proper nouns are always capitalized.
'Mr' is part of a name or designation, for example 'Mr Brown' or 'Mr Speaker'. It therefore forms part of a noun phrase.
mr Johnson obviously
Takes is a verb in that sentence.
That he burned an American flag as part of his protest. He was arrested, prosecuted and was found guilty. Johnson's flag
The cast of Mr. Halpern and Mr. Johnson - 1983 includes: Jackie Gleason as Ernest Johnson Laurence Olivier as Joe Halpern