Stick vs protester

Stick

noun

  • A member of the Official IRA. 

name

  • The Chapman Stick, an electric musical instrument devised by Emmett Chapman. 

protester

noun

  • One who protests, either alone or in a public display of group feeling. 

  • One who protests a bill of exchange, or note. 

How often have the words Stick and protester occurred in a corpus of books? (source: Google Ngram Viewer )