Wash U Med has to spend a pretty penny on extra security, in response to bad PR about the Med School being one of the most dangerous for student safety in the country.
There are Trayvons immediately to the southeast and not too far to the north. That should explain everything.
Wash U’s other campus peddles the notion that none of what the Trayvons do is the fault of the Trayvons, that it’s all the fault of white people. In addition, the ER at Barnes, which is in the same complex as WU Med, often treats Trayvons whose Trayvon pals made holes in them.