Mayor Michael Bloomberg, Kelly had often appeared at outreach events such as the Brooklyn's annual West Indian Day Parade, where he was photographed playing the drums and speaking to community leaders. Bloomberg and Kelly, however, continued to place heavy reliance on the CompStat system, initiated by Bill Bratton and since adopted by police departments in other cities worldwide. The system, while recognized as highly effective in reducing crime, also puts pressure on local precincts to reduce the number of reports for the seven major crimes while increasing the number of lesser arrests. Bloomberg and Kelly continued and indeed stepped up Mayor Giuliani's controversial stop-and-frisk policy, which is considered by some to be a form of racial profiling. In the first half of 2011, the NYC police made 362,150 such arrests, constituting a 13.5 percent increase from the same period in 2010, according to WNYC radio (which also reported that 84 percent of the people stopped were either black or Latino, and that "nine out 10 stops did not result in any arrest or ticket".) According to New York State Senator Eric Adams, "Kelly was one of the great humanitarians in policing under David Dinkins. I don't know what happened to him that all of a sudden his philosophical understanding of the importance of community and police liking each other has changed. Sometimes the expeditious need of bringing down crime numbers bring out the worst in us. So instead of saying let's just go seek out the bad guy, we get to the point of, 'Let's go get them all.' If Kelly can't philosophically change, then we need to have a leadership change at the top." Under Bloomberg, Commissioner Kelly also revamped New York City's Police Department into a world-class counter-terrorism operation, operating in conjunction with the CIA. Prior to the September 11, 2001 attacks there were fewer than two dozen officers working on terrorism full-time; ten years later there were over 1,000. One of Kelly's innovations was his unprecedented stationing of New York City police detectives in other cities throughout the world following terrorist attacks in those cities, with a view to determining if they are in any way connected to the security of New York. In the cases of both the March 11, 2004, Madrid bombing and the July 7, 2005 London bombings and July 21, 2005 London bombings, NYPD detectives were on the scene within a day to