Certainly by 2019 a strong case could be made in virtually any of the U.S.'s member-states for investing more in the security particularly of high schools and two-year, or "junior," colleges, given the number of mass shootings. The majority of the steps taken were doubtlessly well-justified. However, issues of security managers and employees going too far even in unintentionally intimidating students, staff, and even visitors undoubtedly existed too. Unfortunately, such instances can be difficult to detect because they are likely, ironically, to be incidental to what is really needed to provide adequate security. It follows, I submit, that when such an issue does arise, a hidden, rather presumptuous mentality may exist even if it is difficult to detect as it is subtle.
The full essay is at "Intimidating Security Has a Cost."