Complex sentence: Hashomer was successful in providing defense for settlements throughout the country; it aroused the ire of Arab watchmen who lost their jobs and of pilferers, and antagonized the Arab population by retaliatory raids.
Split into simpler sentences: Hashomer was successful in providing defense for settlements throughout the country. It aroused the ire of Arab watchmen who lost their jobs and of pilferers, and antagonized the Arab population by retaliatory raids.