I am uncertain whether either the apron or the graffito could have been left for intimidation, given that the "message" either might convey was uncertain.
Christopher T. George
Organizer, RipperCon #JacktheRipper-#True Crime Conference
For complete information about RipperCon in Baltimore,
April 7-8, 2018, go to http://rippercon.com/
2 days of talks & 2 days of tours, April 6 to April 9!
Places still available.
Don't Miss Out on the Only North American
Conference on the Whitechapel Murders
in the 130th Anniversary Year of the Crimes