A fight in New York City reignites the debate over using force to protect yourself and others. Daniel Penny subdued Jordan Neeley in a subway after he and witnesses say Neeley was threatening people. Protesters and prosecutors say the maneuver Penny used to subdue Neeley was a choke hold and caused hit death illegally. Daniel Penny has been indicted in the case. Sgt Betsy Brantner Smith from the National Police Association explains some basics about self defense, the law and what to expect if you are in the position to have to defend someone.