Strikers became targets of agent provocateurs who infiltrated meetings of "communist labor" and anti-war activists. The activities of agents provocateurs against revolutionaries in Imperial Russia were notorious. Spies and agent provocateurs listened for discontent. The Polish government initially responded by branding the rioters "provocateurs, counterrevolutionaries and imperialist agents". A professional photographer saw what they described as "agents provocateurs" instigating violence. They are especially important for preventing infiltration by agents provocateurs. A political organization or government may use agents provocateurs against political opponents. Undercover officers acting as "agents provocateurs" would pose as gay men soliciting in public places. He was named one of "Chow" magazine's top "provocateurs, trendsetters, and rabble-rousers" in 2009. Other Palestinian leaders suspected instead that the provocateurs were the Phalangists. Dadaists were provocateurs who disrupted public art gatherings and ridiculed the participants. The island was subsequently blockaded by the Navy to prevent movement of possible provocateurs. Candidate Vital Rymasheuski blamed "drunk provocateurs" for the violence. The provocateurs hurled fistfuls of dollars toward the trading floor below.