The following summary and analysis is actually of two different cases involving gang action as an example of the expert
witness,
Lewis Yablonsky's,
process of developing testimony in these cases and the subsequent outcome. Yablonsky has been an expert
witness in a number of gang related cases and not only do his credentials in sociology and psychology prepare him for this work, but he also grew up in the gang atmosphere and has studied and worked with gangs as well as written several books on the topic. His viewpoint and opinions affected the criminal justice process and outcome of these cases.