Actually a majority of young people read at a 4th grade level when graduating from high school in the city of Detroit. Not all of the students but a majority. A guy from there was a student assistant at my library office while he attended the university. An oddity, he told me.
About Most Criminals
IF they could read they would flee in terror from a No Gun Zone sign. Or IF they somehow did not go through the signing of documents and waiting period for a legal firearm then soon pangs of guilt would come over them.