John-Marx-Obituary

Photo courtesy of Monarch Society - Denver

John S. Marx

Mar 23, 1957 - Oct 16, 2025

Guest Book

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Kate and I unfortunately were able to spend nearly enough time with John. He was such a great guy and so fun to be around. He and Brenda moved to Colorado and shortened our times together. We are so grateful that he was part of our lives.

We loved seeing John regularly as he walked Ashley around the neighborhood. Our girls and John both bonded over all things Disney and the love of Ashley. My husband and John developed a friendship and had many good conversations together. We are so heartbroken over the loss of John and sending all our love and hugs to Brenda and family during this hard time in life. We are here for you.

This absolutely breaks my heart. I hadn’t seen John for many years once my work with COPS was done. He made such a difference to COPS when we were a small group of survivors trying to do all we could to help those who followed. He was always there with ideas and words of encouragement when I thought “what the hell am I doing”. He was always there when it was time to plant flowers at the memorial, making it a comforting place for survivors. His passion was helping his fellow officers anyway he...

I first met John at age four. I may be his oldest friend. However, I was not his best friend even though he used to say that to me. Anyone who ever met John and had an opportunity to know him was his "best friend."

He grew up in Denver, almost across the street from me. To know John's character, you had to know his parents. Joyce and Hanns were truly remarkable people. Joyce was a talented and enterprising social worker (one of the few in Denver at the time). Hans was a child...

John and I met when I was assigned to the Community Services Unit with Arvada P.D. We had similar interests in safety and the after effects from traumatic incidents while on the job. We stayed in touch for years, but after I left Arvada in 2000, that was lost. He was a tremendous human being and gave me advice and assistance to guide many of Arvada’s policies on officer wellness. He would be so proud today to know about the Arvada Police Foundation which encompasses many of his goals. May...

John was a great friend and mentor. I was fortunate to attend many wellness conferences with him. He was an outstanding speaker, was thoughtful and considerate. John was a cops cop. He was the first to help in anyway that he could. John will be missed !!

After reading all the tributes, there's very little to add. However, even though it was years ago that we met, he is one fine, caring, compassionate unforgettable colleague. He gave me one of his text books and I gave it to my Department. John had so much to offer and will be sadly missed. May his memory be for a blessing!

I knew John through ILEETA and his presentations there on officer wellness, a subject we shared a passion in. John's book and work will be the Legacy he leaves behind in the law enforcement profession. He will be missed and remembered.

John meant a great deal to me both as a friend and a colleague. He was a remarkable man with a talent for making everyone else around him feel special. He had compassion for others and was always easy to talk with. I loved watching him as a trainer, and seeing the growth from those he coached. He made a difference in every one of their lives. John, I will miss you and thank you for being a part of MY life!

Obituary

John's Obituary

John Steven Marx was born to Joyce Donner on March 23, 1957 in Champaign, IL and succumbed to pancreatic cancer on October 16, 2025 in Littleton, CO.  He was adopted into the family of Dr. Hans Marx as a young boy. John graduated from George Washington High School in Denver and earned his...

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