thanks to much for being here and mess become caroline light and angela pellegrini. >> thank you. thank you for being here. on a school night. to talk about somewhat demoralizing things. and also i want to thank nyu book store for hosting me. it's a real honor to be here and especially to thank ann pellegrini for inengage is in thus discussion and invite michigan me to the her classroom and having a discussion about contemporary legal self-defense and has been an intellectual influence in my work for the past couple of decades. >> i was five years old. >> she was five-year-old own we she published her book, performance anxiety but the books on racialization and -- derivative of the work she has done so i want to thank her for that. so, where shall we start? >> well, the book is so topical, and i guess i wondered what can history off center so this is a become that you began writing sort of the same -- after the death of trayvon martin so in 2012. we hear still far too often about the lethal use of force against young black and brun men in particular and so this is a topic in the n