Good find and plausible scenario imo. Check out the recent studies of conservatives and liberals having different areas of the brain lit up in different areas when having to make a decision suddenly... see also these

http://www.wanttoknow.info/health/funvax070601.pdf

http://www.naturalnews.com/048347_aerosolized_vaccines_behavioral_modification_obedience.html

https://www.psychologytoday.com/blog/the-human-beast/201104/conservatives-big-fear-brain-study-finds

What about planting a suicide gene to someone?

https://www.sciencedaily.com/releases/2014/07/140730043402.htm