This is clearly and obviously false, and using an acronym like "MSM" (which is so slippery as to be meaningless) suggests you don't actually care whether it's false. I hate that the internet encourages ideologically-motivated lying.
https://www.yahoo.com/news/americans-little-sympathy-murdere...
https://www.usatoday.com/story/life/health-wellness/2024/12/...
https://www.nytimes.com/2024/12/05/nyregion/social-media-ins...
https://www.nydailynews.com/2024/12/05/brian-thompson-shooti...
https://www.reuters.com/business/healthcare-pharmaceuticals/...
https://www.barrons.com/articles/united-healthcare-brian-tho...
https://www.axios.com/2024/12/05/unitedhealth-brian-thompson...