27. Spree Murderer Ronald Gene Simmons

In December 1987, during a weeklong rampage, Ronald Gene Simmons managed to injure or kill at least 16 people and wreaked havoc on the entire community of Russellville, Arkansas. 

Sources:

https://en.wikipedia.org/wiki/Ronald_Gene_Simmons 

Ronald Gene Simmons: The Christmas Killer at medium.com by DeLani R Bartlette

https://encyclopediaofarkansas.net/entries/ronald-gene-simmons-3731/ 

https://allthatsinteresting.com/ronald-gene-simmons 

https://aymag.com/murder-mystery-lambs-slaughter 

https://stillpenguins.medium.com/ronald-gene-simmons-motive-remains-a-mystery-after-murdering-14-members-of-his-family-0a3497e86fc1 

https://humphreyfuneral.com/obituaries/joyce-butts-2023

https://www.findagrave.com/memorial/69132897/james_david-chaffin

https://www.findagrave.com/memorial/37538703/kathleen_michele-kendrick

https://www.findagrave.com/memorial/38083551/roberta-woolery

https://www.upi.com/Archives/1987/12/29/Man-shot-by-Simmons-saved-by-chair/8000567752400/

https://www.upi.com/Archives/1988/05/11/Victim-of-shooting-spree-plagued-with-nightmares/6252579326400/