Thanks to increased funds from Obama's Justice Department (that he later regretted), there are increasing amounts of police officers in public schools—often disguised behind the benign term "school resource officers"—resulting in an even easier access point for the school-to-prison pipeline.

Indeed, analysis of National Center for Education Statistics data shows students are more likely to enter the criminal justice system if their school has a police presence—oftentimes while still enrolled in school.

That's not to mention the at least 87 Taserings of students that have happened at American public schools since September 2011.

Across the country, private police are chronically undertrained and inadequately regulated. It doesn't help that the requirements to become an armed private security guard are lax in many states. Just four states require mental health evaluations. Few conduct any kind of investigation into shootings by security guards or conduct comprehensive background checks. None meet training standards set by the industry's own trade organization.

Virginia's special police, or "Special Conservators of the Peace," are private citizens who can apply to a judge for the ability to arrest people, carry a gun, direct traffic, and otherwise present themselves as police officers. There are around 750 in the state. Inevitably, there are multiple reports of them carrying out false arrests.

Through its controversial 1033 program, the Department of Defense distributes military-grade weapons and technology to local police forces.

Among those are campus police. Records obtained by MuckRock show that the Pentagon has given thermal imaging equipment to Yale University, and passed along armored trucks to four colleges in Florida, Maryland, Texas, and Washingon. Ohio State University got a mine-resistent "ambush protected" vehicle.

Not to be outdone, the Department of Homeland Security has been training campus police officers in paramilitary-style policing since 2007.

Of course, the University of Chicago Police Department is not the only one that commits abuses while being largely unaccountable to the public.

In 2014, a black Arizona State University professor was bodyslammed by an armed campus police officer for allegedly not showing him identification while being questioned for jaywalking. (The officer later resigned.)

A black UCLA employee wearing his employee identification was arrested by campus police for allegedly not showing identification (sensing a pattern?), months after the school had settled a lawsuit—for $500,000—about campus police racially profiling black drivers.

The University of Cincinnati paid the family of Samuel DuBose, an unarmed black man killed by a campus police officer during a traffic stop, nearly $5 million. (The officer was indicted by a grand jury and is currently on trial.)

And let's not forget the infamous, pre-YouTube "don't tase me, bro!" viral video of a student being Tasered by a University of Florida armed cop for speaking for too long during a campus town hall with John Kerry.