On May 8, 1970, near the intersection of Wall Street and Broad Street and at New York City Hall, a riot started when about 200 construction workers mobilized by the New York State AFL-CIO labor federation attacked about 1,000 high school and college students and others protesting the Kent State shootings, the Cambodian Campaign, and the Vietnam War. Some attorneys, bankers, and investment analysts from nearby Wall Street investment firms tried to protect many of the students but were themselves attacked, and some onlookers reported that the police stood by and did nothing. Although more than 70 people were injured, including four policemen, only six people were arrested. The following day, Lindsay severely criticized the police for their lack of action. Police Department labor leaders later accused Lindsay of "undermining the confidence of the public in its Police Department" by his statements and blamed the inaction on inadequate preparations and "inconsistent directives" in the past from the mayor's office. Several thousand construction workers, longshoremen and white-collar workers protested against the mayor on May 11 and again on May 16. Protesters called Lindsay "the red mayor,” "traitor,” "Commie rat,” and "bum”. The mayor described the mood of the city as "taut.”