70+ year old with bad habits?

Interesting corner, but no graffiti that I could see.

There’s a lot of graffiti in Vallejo. Unfortunately not as much police presence as they need from budget cuts. But odd that someone mentions the Zodiac

I don’t think it is odd at all, if he is still alive and I do believe that he is, he would want to continue to taunt. What better way to do that without being obvious, than to write a Z on walls.
I have taken pictures of Zodiac like graffiti in Vallejo and near my home ,that I think is still posted here on the Sandy thread? The one that caught my eye in Vallejo was a warning message "psycho is Back" and the Z logo next to that. That was in 1990 behind a Safeway building ,as I was looking for a home in that area where someone with my suspect RH name lived. He was living down town before that on Carolina St. in July 1969. It was a tiny house behind the main house on that street, his door faced the alley.

The graffiti on a corner near my home where I would see it every day as I left my home, was in large red paint , it was 7 in a row. I thought it meant the 7 victims that he claimed in 1969. But later when I received a map of the murders my suspect was claiming, he showed over 70 victims which showed 7 victims in Antioch.

He also took claim for the Santa Rosa murders ,which the police there do not believe was the work of the Zodiac. (We know Zodiac claimed victims that were not his.)

There was graffiti drawn on a wall near the home of the Cab driver Jarmin in San Francisco. That said SKB can tell Glitter Doll. What ever that meant who knows? But that is not gang writing.
How about the graffiti writer this last Dec 12th at Diablo Valley collage? There was a lot of news reports , I was in a few of those about the 50th anniversary of Betty Lou Jensen, David Faraday on Dec 20th 2018 and the death threat that kept us from having a bus tour of Vallejo and the crime scenes.

If Zodiac saw all of the news about the 50th anniversary , he very well could have written the threat at Diablo Valley Collage. It was in Z like printing and was signed with a Z a drawing of a gun and what looked like a bullet hole in the upper left of the message.

That is also where Patricia King’s body was found on March 5th 1970, she was thought to be a possible Zodiac victim. Did Zodiac want us to make that connection by writing graffiti at that collage or was it because it had the name "Diablo"? Lets not assume that Zodiac is dead, because we have a suspect we believe was Zodiac who has died or is in prison. Keep a open mind and don’t dis-regard anything just yet.