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After Haider left the area , scores of protesters clashed with riot police , who fired tear gas to disperse the crowds .
 person: Haider; person: scores of protesters; person: riot police , who fired tear gas to disperse the crowds; person: who; person: the crowds; location: the area; weapon: tear gas
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 person: Haider; person: scores of protesters; person: riot police , who fired tear gas to disperse the crowds; person: who; person: the crowds; location: the area; weapon: tear gas