Sentence:  Garibaldi started his career as a revolutionist in Nice where he had been born. Compelled to flee to South America, he became a noted crusader for the abstract principle of liberty. He returned to Italy for the revolution of 1848 and won renown as leader of the <WSD>Red Shirts</WSD>. 
Meaning of the word marked with <WSD> tags:  A follower of (Giuseppe Garibaldi), an Italian revolutionary in the later nineteenth century.