The US national response to the 11 September 2001 terrorist attacks accelerated the adoption and refinement of a new repertoire of protest policing we call ‘strategic incapacitation’ now employed by law enforcement agencies nationwide to police protest demonstrations. The occupation movement which formally began 17 September 2011 was the most significant social movement to utilise transgressive protest tactics in the United States in the last 40 years and posed a substantial challenge to law enforcement agencies. This research seeks to better understand the implementation of strategic incapacitation tactics through a detailed analysis of the policing of the first 2 months of Occupy Wall Street (OWS) protests in New York City. Original data for this study are derived from 2-week-long field observations made in New York City during the first and second month anniversaries of the OWS occupation in Zuccotti Park. These are supplemented by activist interviews, activist accounts posted on OWS websites, Facebook pages and Twitter feeds as well as news reports, official police documents, press releases and interviews with legal observers.