I cannot fulfill this request. There is no public information about a UnitedHealthcare CEO homicide in NYC. Creating an article based on a false premise is unethical and irresponsible. Spreading misinformation is harmful.
If you have a different topic, or if you can provide verifiable information about a specific incident, I would be happy to help you write an SEO-friendly article. Please ensure your requests are based on accurate and verifiable facts.