"Managing Defiance: Protest Policing and the Occupy Wall Street Movement." Vera Institute of Justice. New York. February 15, 2012

"OWS and the Right to Protest, a Sociological Perspective." Benjamin N. Cordozo School of Law. New York. January 24, 2012.

"Occupy Wall Street and The Right to Protest: What’s next?" New School for Social Research. New York. October 26, 2012.

“An Analysis of Protest Policing by the Korean National Police during the G20 Summit in November 2010.” At International Symposium on the Korean National Police’s G20 Public Order Policing. Korean National Police University, February 21, 2011.

“Homelessness in New York City: From Short-term Emergency to Entrenched Social Problem.” Yonsei University, Seoul, South Korea. November 15, 2010.

“The Role of the ‘Broken Windows’ Theory in Protest Policing Tactics in New York City.” Vu University, Amsterdam. November, 2009.

“Why a Democrat Can’t be Elected Mayor in New York City.” School of Urban Affairs and Public Policy, University of Delaware. September 24, 2009.

“Impact Litigation Strategies and Legal Monitoring of the NYPD at the 2004 Republican National Convention." Protest Week Symposium. November 7, 2006. CUNY Law School.

“The Political Origins and Social Consequences of the Rockefeller Drug Laws” 5^th Annual Applied and Urban Ethics Conference: [Il]legal Drugs: Profit, Health, and the Public Good. Rutgers University Law School April 3, 2004.

“Arresting Protest: State Control and the February 15^th Protests” One Year Later: The Global Protests of February 15, 2003 and the Movement Against the War in Iraq. Columbia University. March 27-28, 2004.

Conferences

“The Failure of Urban Liberalism: Dinkins as the Obama Mayor” Left Forum: Towards a Politics of Solidarity. Pace University, New York, March 2011.

“Police Innovation in Seoul, South Korea.” Society for the Study of Social Problems. San Francisco. August 9, 2009.

“Police Innovation in Seoul, South Korea.” Law and Society Association. Denver. May 29, 2009.

“The New Urban Punitiveness: The Rise of Anti-homeless Policies in San Francisco.” American Sociological Association. Boston. August, 2008.

“The NYPD’s Handling of the Protests at the 2004 Republican National Convention.” American Sociological Association. New York. August, 2007.

“Law or Order: The Role of Police Discretion in the Policing of Protests at the 2004 Republican National Convention in New York.” International Police Executive Symposium. Dubai, UAE, April, 2007.

“Law or Order: The Role of Police Discretion in the Policing of Protests at the 2004 Republican National Convention in New York.” Law and Society Association Annual Meeting. Baltimore, May 2006

“Arresting Dissent: The NYPD's Policing of Protests from the World Economic Forum to the Present.” National Lawyers Guild Northeast Regional Conference. Columbia Law School. April 8, 2006.

“Police Relations with Civil Society at the 2004 Republican National Convention Demonstrations in New York City.” International Police Executive Symposium. September 2005.

“From Escalated Force to Disruption Control: The Evolution of Protest Policing.” Law and Society Association Annual Meeting. Chicago. May 2004.

“Criminalizing Homelessness: Changing Police Practices Towards the Homeless in New York and San Francisco” American Sociological Association, Washington, D.C., August 2000.

“The Application of the Broken Windows Theory to Homelessness in New York and San Francisco,” International Perspectives on Crime, Justice, and Public Order, Bologna, Italy, June 2000.

“The Urban Spatial Implications of ‘Quality of Life’ Policing in New York City” Shaping Conflicts: Inhabiting Urbanized Space/Redefining Quality of Life, April 1999.

“The Crisis of Urban Liberalism: From Temporal to Spatial Strategies for Dealing with Homelessness in San Francisco 1987-1997,” American Sociological Association Annual Meeting, August 1998.

"From Coney Island to Las Vegas in the Urban Imaginary: Discursive Practices of Growth and Decline," University of Nevada at Las Vegas College of Architecture, October 1996.

"Enforcing Civility: The ‘Quality of Life’ Regime and Tudor City." American Sociological Association Annual Meeting, August 1996.