The serious threat to innocent citizens

The serious threat to innocent citizens and first responders that the mentally ill pose.
The horrific events that have occurred in just the past few years in New York City bring to the forefront the serious threat to innocent citizens and first responders that the mentally ill pose.
In a seven page essay, summarize what those challenges are and what steps have been taken to come up with an effective course of action by New York City. Your discussion should include whether what has been done has proven to be effective and if not, can we realistically expect to come up with programs that can deal with the threats that such a large population of mentally ill people pose to our society.