During the revolution he was recruited by General Antonio Luna to serve as contributor and editor for the newspaper, La Independencia, together with Rafael Palma and Epifanio de los Santos.

During the early years of the American occupation, he would be reunited with Rafael Palma at El Renacimiento (The Rebirth), a Spanish-language daily.

Under Guerrero's leadership as its director, El Renaciemento would become the most influential and powerful paper in the Philippines—exposing and speaking against the oppression and brutality of the constabulary.

Guerrero died on June 12, 1929, coinciding with that year's anniversary of the República Filipina (Philippine Republic).

My race adored the glory Of the beauty of the Spanish tongue That is spoken by the Quixotes From this Malay region, Where new Sanchos would like